]> granicus.if.org Git - postgresql/blobdiff - src/test/regress/pg_regress.c
Update copyright for the year 2010.
[postgresql] / src / test / regress / pg_regress.c
index 8794e93a51b47a3b615d44981cce9b2fd3da7ad8..551b626d3c6b0ab33ad5570768cc37db14afb08b 100644 (file)
@@ -8,10 +8,10 @@
  *
  * This code is released under the terms of the PostgreSQL License.
  *
- * Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/test/regress/pg_regress.c,v 1.34 2007/06/12 13:26:45 mha Exp $
+ * $PostgreSQL: pgsql/src/test/regress/pg_regress.c,v 1.69 2010/01/02 16:58:15 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -47,11 +47,16 @@ typedef struct _resultmap
  * out where "make install" will put stuff under the temp_install directory.
  * In non-temp_install mode, the only thing we need is the location of psql,
  * which we expect to find in psqldir, or in the PATH if psqldir isn't given.
+ *
+ * XXX Because pg_regress is not installed in bindir, we can't support
+ * this for relocatable trees as it is.  --psqldir would need to be
+ * specified in those cases.
  */
-char *bindir = PGBINDIR;
-char *libdir = LIBDIR;
-char *datadir = PGSHAREDIR;
-char *host_platform = HOST_TUPLE;
+char      *bindir = PGBINDIR;
+char      *libdir = LIBDIR;
+char      *datadir = PGSHAREDIR;
+char      *host_platform = HOST_TUPLE;
+
 #ifndef WIN32_ONLY_COMPILER
 static char *makeprog = MAKEPROG;
 #endif
@@ -60,29 +65,40 @@ static char *makeprog = MAKEPROG;
 static char *shellprog = SHELLPROG;
 #endif
 
-/* currently we can use the same diff switches on all platforms */
+/*
+ * On Windows we use -w in diff switches to avoid problems with inconsistent
+ * newline representation.  The actual result files will generally have
+ * Windows-style newlines, but the comparison files might or might not.
+ */
+#ifndef WIN32
+const char *basic_diff_opts = "";
+const char *pretty_diff_opts = "-C3";
+#else
 const char *basic_diff_opts = "-w";
 const char *pretty_diff_opts = "-w -C3";
+#endif
 
 /* options settable from command line */
 _stringlist *dblist = NULL;
-bool debug = false;
-char *inputdir = ".";
-char *outputdir = ".";
-char *psqldir = NULL;
+bool           debug = false;
+char      *inputdir = ".";
+char      *outputdir = ".";
+char      *psqldir = PGBINDIR;
 static _stringlist *loadlanguage = NULL;
 static int     max_connections = 0;
 static char *encoding = NULL;
 static _stringlist *schedulelist = NULL;
 static _stringlist *extra_tests = NULL;
 static char *temp_install = NULL;
+static char *temp_config = NULL;
 static char *top_builddir = NULL;
-static int     temp_port = 65432;
 static bool nolocale = false;
+static bool use_existing = false;
 static char *hostname = NULL;
 static int     port = -1;
+static bool port_specified_by_user = false;
+static char *dlpath = PKGLIBDIR;
 static char *user = NULL;
-static char *srcdir = NULL;
 static _stringlist *extraroles = NULL;
 
 /* internal variables */
@@ -100,10 +116,8 @@ static int success_count = 0;
 static int     fail_count = 0;
 static int     fail_ignore_count = 0;
 
-static bool
-directory_exists(const char *dir);
-static void
-make_directory(const char *dir);
+static bool directory_exists(const char *dir);
+static void make_directory(const char *dir);
 
 static void
 header(const char *fmt,...)
@@ -122,7 +136,7 @@ psql_command(const char *database, const char *query,...)
 __attribute__((format(printf, 2, 3)));
 
 #ifdef WIN32
-typedef BOOL(WINAPI * __CreateRestrictedToken) (HANDLE, DWORD, DWORD, PSID_AND_ATTRIBUTES, DWORD, PLUID_AND_ATTRIBUTES, DWORD, PSID_AND_ATTRIBUTES, PHANDLE);
+typedef BOOL (WINAPI * __CreateRestrictedToken) (HANDLE, DWORD, DWORD, PSID_AND_ATTRIBUTES, DWORD, PLUID_AND_ATTRIBUTES, DWORD, PSID_AND_ATTRIBUTES, PHANDLE);
 
 /* Windows API define missing from MingW headers */
 #define DISABLE_MAX_PRIVILEGE  0x1
@@ -132,23 +146,24 @@ typedef BOOL(WINAPI * __CreateRestrictedToken) (HANDLE, DWORD, DWORD, PSID_AND_A
  * allow core files if possible.
  */
 #if defined(HAVE_GETRLIMIT) && defined(RLIMIT_CORE)
-static void 
+static void
 unlimit_core_size(void)
 {
        struct rlimit lim;
-       getrlimit(RLIMIT_CORE,&lim);
+
+       getrlimit(RLIMIT_CORE, &lim);
        if (lim.rlim_max == 0)
        {
                fprintf(stderr,
-                               _("%s: cannot set core size,: disallowed by hard limit.\n"), 
+                               _("%s: could not set core size: disallowed by hard limit\n"),
                                progname);
                return;
        }
        else if (lim.rlim_max == RLIM_INFINITY || lim.rlim_cur < lim.rlim_max)
        {
                lim.rlim_cur = lim.rlim_max;
-               setrlimit(RLIMIT_CORE,&lim);
-       }       
+               setrlimit(RLIMIT_CORE, &lim);
+       }
 }
 #endif
 
@@ -178,7 +193,7 @@ add_stringlist_item(_stringlist ** listhead, const char *str)
  * Free a stringlist.
  */
 static void
-free_stringlist(_stringlist **listhead) 
+free_stringlist(_stringlist ** listhead)
 {
        if (listhead == NULL || *listhead == NULL)
                return;
@@ -193,10 +208,11 @@ free_stringlist(_stringlist **listhead)
  * Split a delimited string into a stringlist
  */
 static void
-split_to_stringlist(const char *s, const char *delim, _stringlist **listhead)
+split_to_stringlist(const char *s, const char *delim, _stringlist ** listhead)
 {
-       char *sc = strdup(s);
-       char *token = strtok(sc, delim);
+       char       *sc = strdup(s);
+       char       *token = strtok(sc, delim);
+
        while (token)
        {
                add_stringlist_item(listhead, token);
@@ -265,6 +281,7 @@ stop_postmaster(void)
        {
                /* We use pg_ctl to issue the kill and wait for stop */
                char            buf[MAXPGPATH * 2];
+               int                     r;
 
                /* On Windows, system() seems not to force fflush, so... */
                fflush(stdout);
@@ -273,7 +290,14 @@ stop_postmaster(void)
                snprintf(buf, sizeof(buf),
                                 SYSTEMQUOTE "\"%s/pg_ctl\" stop -D \"%s/data\" -s -m fast" SYSTEMQUOTE,
                                 bindir, temp_install);
-               system(buf);                    /* ignore exit status */
+               r = system(buf);
+               if (r != 0)
+               {
+                       fprintf(stderr, _("\n%s: could not stop postmaster: exit code was %d\n"),
+                                       progname, r);
+                       exit(2);                        /* not exit_nicely(), that would be recursive */
+               }
+
                postmaster_running = false;
        }
 }
@@ -369,11 +393,11 @@ string_matches_pattern(const char *str, const char *pattern)
 void
 replace_string(char *string, char *replace, char *replacement)
 {
-       char *ptr;
+       char       *ptr;
 
-       while ((ptr = strstr(string, replace)) != NULL) 
+       while ((ptr = strstr(string, replace)) != NULL)
        {
-               char *dup = strdup(string);
+               char       *dup = strdup(string);
 
                strlcpy(string, dup, ptr - string + 1);
                strcat(string, replacement);
@@ -389,66 +413,62 @@ replace_string(char *string, char *replace, char *replacement)
  * the given suffix.
  */
 static void
-convert_sourcefiles_in(char *source, char *dest, char *suffix)
+convert_sourcefiles_in(char *source_subdir, char *dest_subdir, char *suffix)
 {
-       char    abs_srcdir[MAXPGPATH];
-       char    abs_builddir[MAXPGPATH];
-       char    testtablespace[MAXPGPATH];
-       char    indir[MAXPGPATH];
-       char  **name;
-       char  **names;
-       int             count = 0;
-#ifdef WIN32
-       char *c;
-#endif
+       char            testtablespace[MAXPGPATH];
+       char            indir[MAXPGPATH];
+       struct stat st;
+       int                     ret;
+       char      **name;
+       char      **names;
+       int                     count = 0;
+
+       snprintf(indir, MAXPGPATH, "%s/%s", inputdir, source_subdir);
 
-       if (!getcwd(abs_builddir, sizeof(abs_builddir)))
+       /* Check that indir actually exists and is a directory */
+       ret = stat(indir, &st);
+       if (ret != 0 || !S_ISDIR(st.st_mode))
        {
-               fprintf(stderr, _("%s: could not get current directory: %s\n"),
-                       progname, strerror(errno));
-               exit_nicely(2);
+               /*
+                * No warning, to avoid noise in tests that do not have these
+                * directories; for example, ecpg, contrib and src/pl.
+                */
+               return;
        }
 
-       /*
-        * in a VPATH build, use the provided source directory; otherwise, use
-        * the current directory.
-        */
-       if (srcdir)
-               strcpy(abs_srcdir, srcdir);
-       else
-               strcpy(abs_srcdir, abs_builddir);
-
-       snprintf(indir, MAXPGPATH, "%s/%s", abs_srcdir, source);
        names = pgfnames(indir);
        if (!names)
                /* Error logged in pgfnames */
                exit_nicely(2);
 
+       snprintf(testtablespace, MAXPGPATH, "%s/testtablespace", outputdir);
+
 #ifdef WIN32
-       /* in Win32, replace backslashes with forward slashes */
-       for (c = abs_builddir; *c; c++)
-               if (*c == '\\')
-                       *c = '/';
-       for (c = abs_srcdir; *c; c++)
-               if (*c == '\\')
-                       *c = '/';
-#endif
 
-       /* try to create the test tablespace dir if it doesn't exist */
-       snprintf(testtablespace, MAXPGPATH, "%s/testtablespace", abs_builddir);
+       /*
+        * On Windows only, clean out the test tablespace dir, or create it if it
+        * doesn't exist.  On other platforms we expect the Makefile to take care
+        * of that.  (We don't migrate that functionality in here because it'd be
+        * harder to cope with platform-specific issues such as SELinux.)
+        *
+        * XXX it would be better if pg_regress.c had nothing at all to do with
+        * testtablespace, and this were handled by a .BAT file or similar on
+        * Windows.  See pgsql-hackers discussion of 2008-01-18.
+        */
        if (directory_exists(testtablespace))
                rmtree(testtablespace, true);
        make_directory(testtablespace);
+#endif
 
        /* finally loop on each file and do the replacement */
        for (name = names; *name; name++)
        {
-               char    srcfile[MAXPGPATH];
-               char    destfile[MAXPGPATH];
-               char    prefix[MAXPGPATH];
-               FILE   *infile,
-                          *outfile;
-               char    line[1024];
+               char            srcfile[MAXPGPATH];
+               char            destfile[MAXPGPATH];
+               char            prefix[MAXPGPATH];
+               FILE       *infile,
+                                  *outfile;
+               char            line[1024];
 
                /* reject filenames not finishing in ".source" */
                if (strlen(*name) < 8)
@@ -461,7 +481,7 @@ convert_sourcefiles_in(char *source, char *dest, char *suffix)
                /* build the full actual paths to open */
                snprintf(prefix, strlen(*name) - 6, "%s", *name);
                snprintf(srcfile, MAXPGPATH, "%s/%s", indir, *name);
-               snprintf(destfile, MAXPGPATH, "%s/%s.%s", dest, prefix, suffix);
+               snprintf(destfile, MAXPGPATH, "%s/%s.%s", dest_subdir, prefix, suffix);
 
                infile = fopen(srcfile, "r");
                if (!infile)
@@ -474,14 +494,15 @@ convert_sourcefiles_in(char *source, char *dest, char *suffix)
                if (!outfile)
                {
                        fprintf(stderr, _("%s: could not open file \"%s\" for writing: %s\n"),
-                               progname, destfile, strerror(errno));
+                                       progname, destfile, strerror(errno));
                        exit_nicely(2);
                }
                while (fgets(line, sizeof(line), infile))
                {
-                       replace_string(line, "@abs_srcdir@", abs_srcdir);
-                       replace_string(line, "@abs_builddir@", abs_builddir);
+                       replace_string(line, "@abs_srcdir@", inputdir);
+                       replace_string(line, "@abs_builddir@", outputdir);
                        replace_string(line, "@testtablespace@", testtablespace);
+                       replace_string(line, "@libdir@", dlpath);
                        replace_string(line, "@DLSUFFIX@", DLSUFFIX);
                        fputs(line, outfile);
                }
@@ -491,32 +512,24 @@ convert_sourcefiles_in(char *source, char *dest, char *suffix)
 
        /*
         * If we didn't process any files, complain because it probably means
-        * somebody neglected to pass the needed --srcdir argument.
+        * somebody neglected to pass the needed --inputdir argument.
         */
        if (count <= 0)
        {
-               fprintf(stderr, _("%s: no *.source files found in %s\n"),
+               fprintf(stderr, _("%s: no *.source files found in \"%s\"\n"),
                                progname, indir);
                exit_nicely(2);
        }
-       
-    pgfnames_cleanup(names);
+
+       pgfnames_cleanup(names);
 }
 
 /* Create the .sql and .out files from the .source files, if any */
 static void
 convert_sourcefiles(void)
 {
-       struct stat     st;
-       int             ret;
-
-       ret = stat("input", &st);
-       if (ret == 0 && S_ISDIR(st.st_mode))
-               convert_sourcefiles_in("input", "sql", "sql");
-
-       ret = stat("output", &st);
-       if (ret == 0 && S_ISDIR(st.st_mode))
-               convert_sourcefiles_in("output", "expected", "out");
+       convert_sourcefiles_in("input", "sql", "sql");
+       convert_sourcefiles_in("output", "expected", "out");
 }
 
 /*
@@ -568,7 +581,7 @@ load_resultmap(void)
                if (!file_type)
                {
                        fprintf(stderr, _("incorrectly formatted resultmap entry: %s\n"),
-                               buf);
+                                       buf);
                        exit_nicely(2);
                }
                *file_type++ = '\0';
@@ -614,9 +627,10 @@ load_resultmap(void)
  * Check in resultmap if we should be looking at a different file
  */
 static
-const char *get_expectfile(const char *testname, const char *file)
+const char *
+get_expectfile(const char *testname, const char *file)
 {
-       char *file_type;
+       char       *file_type;
        _resultmap *rm;
 
        /*
@@ -683,22 +697,32 @@ initialize_environment(void)
 {
        char       *tmp;
 
+       if (nolocale)
+       {
+               /*
+                * Clear out any non-C locale settings
+                */
+               unsetenv("LC_COLLATE");
+               unsetenv("LC_CTYPE");
+               unsetenv("LC_MONETARY");
+               unsetenv("LC_NUMERIC");
+               unsetenv("LC_TIME");
+               unsetenv("LANG");
+               /* On Windows the default locale cannot be English, so force it */
+#if defined(WIN32) || defined(__CYGWIN__)
+               putenv("LANG=en");
+#endif
+       }
+
        /*
-        * Clear out any non-C locale settings
+        * Set translation-related settings to English; otherwise psql will
+        * produce translated messages and produce diffs.  (XXX If we ever support
+        * translation of pg_regress, this needs to be moved elsewhere, where psql
+        * is actually called.)
         */
-       unsetenv("LC_COLLATE");
-       unsetenv("LC_CTYPE");
-       unsetenv("LC_MONETARY");
-       unsetenv("LC_MESSAGES");
-       unsetenv("LC_NUMERIC");
-       unsetenv("LC_TIME");
-       unsetenv("LC_ALL");
-       unsetenv("LANG");
        unsetenv("LANGUAGE");
-       /* On Windows the default locale cannot be English, so force it */
-#if defined(WIN32) || defined(__CYGWIN__)
-       putenv("LANG=en");
-#endif
+       unsetenv("LC_ALL");
+       putenv("LC_MESSAGES=C");
 
        /*
         * Set multibyte as requested
@@ -714,6 +738,23 @@ initialize_environment(void)
        putenv("PGTZ=PST8PDT");
        putenv("PGDATESTYLE=Postgres, MDY");
 
+       /*
+        * Likewise set intervalstyle to ensure consistent results.  This is a bit
+        * more painful because we must use PGOPTIONS, and we want to preserve the
+        * user's ability to set other variables through that.
+        */
+       {
+               const char *my_pgoptions = "-c intervalstyle=postgres_verbose";
+               const char *old_pgoptions = getenv("PGOPTIONS");
+               char       *new_pgoptions;
+
+               if (!old_pgoptions)
+                       old_pgoptions = "";
+               new_pgoptions = malloc(strlen(old_pgoptions) + strlen(my_pgoptions) + 12);
+               sprintf(new_pgoptions, "PGOPTIONS=%s %s", old_pgoptions, my_pgoptions);
+               putenv(new_pgoptions);
+       }
+
        if (temp_install)
        {
                /*
@@ -761,7 +802,7 @@ initialize_environment(void)
 
                /* psql will be installed into temp-install bindir */
                psqldir = bindir;
-               
+
                /*
                 * Set up shared library paths to include the temp install.
                 *
@@ -911,7 +952,7 @@ spawn_process(const char *cmdline)
                char       *cmdline2 = malloc(strlen(cmdline) + 6);
 
                sprintf(cmdline2, "exec %s", cmdline);
-               execl(shellprog, shellprog, "-c", cmdline2, NULL);
+               execl(shellprog, shellprog, "-c", cmdline2, (char *) NULL);
                fprintf(stderr, _("%s: could not exec \"%s\": %s\n"),
                                progname, shellprog, strerror(errno));
                exit(1);                                /* not exit_nicely here... */
@@ -920,81 +961,100 @@ spawn_process(const char *cmdline)
        return pid;
 #else
        char       *cmdline2;
-       BOOL b;
+       BOOL            b;
        STARTUPINFO si;
        PROCESS_INFORMATION pi;
-       HANDLE origToken;
-       HANDLE restrictedToken;
+       HANDLE          origToken;
+       HANDLE          restrictedToken;
        SID_IDENTIFIER_AUTHORITY NtAuthority = {SECURITY_NT_AUTHORITY};
        SID_AND_ATTRIBUTES dropSids[2];
        __CreateRestrictedToken _CreateRestrictedToken = NULL;
-       HANDLE Advapi32Handle;
+       HANDLE          Advapi32Handle;
 
        ZeroMemory(&si, sizeof(si));
        si.cb = sizeof(si);
-       
+
        Advapi32Handle = LoadLibrary("ADVAPI32.DLL");
        if (Advapi32Handle != NULL)
        {
-      _CreateRestrictedToken = (__CreateRestrictedToken) GetProcAddress(Advapi32Handle, "CreateRestrictedToken");
-   }
-   
-   if (_CreateRestrictedToken == NULL)
-   {
-      if (Advapi32Handle != NULL)
-       FreeLibrary(Advapi32Handle);
-      fprintf(stderr, "ERROR: cannot create restricted tokens on this platform\n");
-      exit_nicely(2);
-   }
-
-   /* Open the current token to use as base for the restricted one */
-   if (!OpenProcessToken(GetCurrentProcess(), TOKEN_ALL_ACCESS, &origToken))
-   {
-      fprintf(stderr, "could not open process token: %lu\n", GetLastError());
-      exit_nicely(2);
-   }
+               _CreateRestrictedToken = (__CreateRestrictedToken) GetProcAddress(Advapi32Handle, "CreateRestrictedToken");
+       }
+
+       if (_CreateRestrictedToken == NULL)
+       {
+               if (Advapi32Handle != NULL)
+                       FreeLibrary(Advapi32Handle);
+               fprintf(stderr, _("%s: cannot create restricted tokens on this platform\n"),
+                               progname);
+               exit_nicely(2);
+       }
+
+       /* Open the current token to use as base for the restricted one */
+       if (!OpenProcessToken(GetCurrentProcess(), TOKEN_ALL_ACCESS, &origToken))
+       {
+               fprintf(stderr, _("could not open process token: %lu\n"),
+                               GetLastError());
+               exit_nicely(2);
+       }
 
        /* Allocate list of SIDs to remove */
        ZeroMemory(&dropSids, sizeof(dropSids));
        if (!AllocateAndInitializeSid(&NtAuthority, 2,
-                       SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_ADMINS, 0, 0, 0, 0, 0, 0, &dropSids[0].Sid) ||
-                !AllocateAndInitializeSid(&NtAuthority, 2,
-                  SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_POWER_USERS, 0, 0, 0, 0, 0, 0, &dropSids[1].Sid))
-   {
-      fprintf(stderr, "could not allocate SIDs: %lu\n", GetLastError());
-      exit_nicely(2);
-   }
-       
+                                                                 SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_ADMINS, 0, 0, 0, 0, 0, 0, &dropSids[0].Sid) ||
+               !AllocateAndInitializeSid(&NtAuthority, 2,
+                                                                 SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_POWER_USERS, 0, 0, 0, 0, 0, 0, &dropSids[1].Sid))
+       {
+               fprintf(stderr, _("could not allocate SIDs: %lu\n"), GetLastError());
+               exit_nicely(2);
+       }
+
        b = _CreateRestrictedToken(origToken,
-          DISABLE_MAX_PRIVILEGE,
-          sizeof(dropSids)/sizeof(dropSids[0]),
-          dropSids,
-          0, NULL,
-          0, NULL,
-          &restrictedToken);
-
-   FreeSid(dropSids[1].Sid);
-   FreeSid(dropSids[0].Sid);
-   CloseHandle(origToken);
-   FreeLibrary(Advapi32Handle);
-   
-   if (!b)
-   {
-      fprintf(stderr, "could not create restricted token: %lu\n", GetLastError());
-      exit_nicely(2);
-   }
+                                                          DISABLE_MAX_PRIVILEGE,
+                                                          sizeof(dropSids) / sizeof(dropSids[0]),
+                                                          dropSids,
+                                                          0, NULL,
+                                                          0, NULL,
+                                                          &restrictedToken);
+
+       FreeSid(dropSids[1].Sid);
+       FreeSid(dropSids[0].Sid);
+       CloseHandle(origToken);
+       FreeLibrary(Advapi32Handle);
+
+       if (!b)
+       {
+               fprintf(stderr, _("could not create restricted token: %lu\n"),
+                               GetLastError());
+               exit_nicely(2);
+       }
 
        cmdline2 = malloc(strlen(cmdline) + 8);
        sprintf(cmdline2, "cmd /c %s", cmdline);
 
-       if (!CreateProcessAsUser(restrictedToken, NULL, cmdline2, NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi))
+#ifndef __CYGWIN__
+       AddUserToTokenDacl(restrictedToken);
+#endif
+
+       if (!CreateProcessAsUser(restrictedToken,
+                                                        NULL,
+                                                        cmdline2,
+                                                        NULL,
+                                                        NULL,
+                                                        TRUE,
+                                                        CREATE_SUSPENDED,
+                                                        NULL,
+                                                        NULL,
+                                                        &si,
+                                                        &pi))
        {
                fprintf(stderr, _("could not start process for \"%s\": %lu\n"),
                                cmdline2, GetLastError());
                exit_nicely(2);
        }
+
        free(cmdline2);
 
+       ResumeThread(pi.hThread);
        CloseHandle(pi.hThread);
        return pi.hProcess;
 #endif
@@ -1046,7 +1106,7 @@ file_line_count(const char *file)
        return l;
 }
 
-static bool
+bool
 file_exists(const char *file)
 {
        FILE       *f = fopen(file, "r");
@@ -1064,7 +1124,7 @@ directory_exists(const char *dir)
 
        if (stat(dir, &st) != 0)
                return false;
-       if (st.st_mode & S_IFDIR)
+       if (S_ISDIR(st.st_mode))
                return true;
        return false;
 }
@@ -1087,16 +1147,21 @@ make_directory(const char *dir)
 static char *
 get_alternative_expectfile(const char *expectfile, int i)
 {
-       char *last_dot;
-       int ssize = strlen(expectfile) + 2 + 1;
-       char *tmp = (char *)malloc(ssize);
-       char *s = (char *)malloc(ssize);
+       char       *last_dot;
+       int                     ssize = strlen(expectfile) + 2 + 1;
+       char       *tmp = (char *) malloc(ssize);
+       char       *s = (char *) malloc(ssize);
+
        strcpy(tmp, expectfile);
-       last_dot = strrchr(tmp,'.');
+       last_dot = strrchr(tmp, '.');
        if (!last_dot)
+       {
+               free(tmp);
+               free(s);
                return NULL;
+       }
        *last_dot = '\0';
-       snprintf(s, ssize, "%s_%d.%s", tmp, i, last_dot+1);
+       snprintf(s, ssize, "%s_%d.%s", tmp, i, last_dot + 1);
        free(tmp);
        return s;
 }
@@ -1151,19 +1216,20 @@ results_differ(const char *testname, const char *resultsfile, const char *defaul
        const char *platform_expectfile;
 
        /*
-        * We can pass either the resultsfile or the expectfile, they should
-        * have the same type (filename.type) anyway.
+        * We can pass either the resultsfile or the expectfile, they should have
+        * the same type (filename.type) anyway.
         */
        platform_expectfile = get_expectfile(testname, resultsfile);
 
        strcpy(expectfile, default_expectfile);
-       if (platform_expectfile) 
+       if (platform_expectfile)
        {
                /*
                 * Replace everything afer the last slash in expectfile with what the
                 * platform_expectfile contains.
                 */
-               char *p = strrchr(expectfile, '/');
+               char       *p = strrchr(expectfile, '/');
+
                if (p)
                        strcpy(++p, platform_expectfile);
        }
@@ -1189,7 +1255,7 @@ results_differ(const char *testname, const char *resultsfile, const char *defaul
 
        for (i = 0; i <= 9; i++)
        {
-               char *alt_expectfile;
+               char       *alt_expectfile;
 
                alt_expectfile = get_alternative_expectfile(expectfile, i);
                if (!file_exists(alt_expectfile))
@@ -1265,14 +1331,15 @@ results_differ(const char *testname, const char *resultsfile, const char *defaul
 }
 
 /*
- * Wait for specified subprocesses to finish
+ * Wait for specified subprocesses to finish, and return their exit
+ * statuses into statuses[]
  *
- * If names isn't NULL, report each subprocess as it finishes
+ * If names isn't NULL, print each subprocess's name as it finishes
  *
  * Note: it's OK to scribble on the pids array, but not on the names array
  */
 static void
-wait_for_tests(PID_TYPE * pids, char **names, int num_tests)
+wait_for_tests(PID_TYPE * pids, int *statuses, char **names, int num_tests)
 {
        int                     tests_left;
        int                     i;
@@ -1289,7 +1356,9 @@ wait_for_tests(PID_TYPE * pids, char **names, int num_tests)
                PID_TYPE        p;
 
 #ifndef WIN32
-               p = wait(NULL);
+               int                     exit_status;
+
+               p = wait(&exit_status);
 
                if (p == INVALID_PID)
                {
@@ -1298,6 +1367,7 @@ wait_for_tests(PID_TYPE * pids, char **names, int num_tests)
                        exit_nicely(2);
                }
 #else
+               DWORD           exit_status;
                int                     r;
 
                r = WaitForMultipleObjects(tests_left, active_pids, FALSE, INFINITE);
@@ -1317,9 +1387,11 @@ wait_for_tests(PID_TYPE * pids, char **names, int num_tests)
                        if (p == pids[i])
                        {
 #ifdef WIN32
+                               GetExitCodeProcess(pids[i], &exit_status);
                                CloseHandle(pids[i]);
 #endif
                                pids[i] = INVALID_PID;
+                               statuses[i] = (int) exit_status;
                                if (names)
                                        status(" %s", names[i]);
                                tests_left--;
@@ -1333,6 +1405,35 @@ wait_for_tests(PID_TYPE * pids, char **names, int num_tests)
 #endif
 }
 
+/*
+ * report nonzero exit code from a test process
+ */
+static void
+log_child_failure(int exitstatus)
+{
+       if (WIFEXITED(exitstatus))
+               status(_(" (test process exited with exit code %d)"),
+                          WEXITSTATUS(exitstatus));
+       else if (WIFSIGNALED(exitstatus))
+       {
+#if defined(WIN32)
+               status(_(" (test process was terminated by exception 0x%X)"),
+                          WTERMSIG(exitstatus));
+#elif defined(HAVE_DECL_SYS_SIGLIST) && HAVE_DECL_SYS_SIGLIST
+               status(_(" (test process was terminated by signal %d: %s)"),
+                          WTERMSIG(exitstatus),
+                          WTERMSIG(exitstatus) < NSIG ?
+                          sys_siglist[WTERMSIG(exitstatus)] : "(unknown))");
+#else
+               status(_(" (test process was terminated by signal %d)"),
+                          WTERMSIG(exitstatus));
+#endif
+       }
+       else
+               status(_(" (test process exited with unrecognized status %d)"),
+                          exitstatus);
+}
+
 /*
  * Run all the tests specified in one schedule file
  */
@@ -1345,14 +1446,15 @@ run_schedule(const char *schedule, test_function tfunc)
        _stringlist *expectfiles[MAX_PARALLEL_TESTS];
        _stringlist *tags[MAX_PARALLEL_TESTS];
        PID_TYPE        pids[MAX_PARALLEL_TESTS];
+       int                     statuses[MAX_PARALLEL_TESTS];
        _stringlist *ignorelist = NULL;
        char            scbuf[1024];
        FILE       *scf;
        int                     line_num = 0;
 
-       memset(resultfiles,0,sizeof(_stringlist *) * MAX_PARALLEL_TESTS);
-       memset(expectfiles,0,sizeof(_stringlist *) * MAX_PARALLEL_TESTS);
-       memset(tags,0,sizeof(_stringlist *) * MAX_PARALLEL_TESTS);
+       memset(resultfiles, 0, sizeof(_stringlist *) * MAX_PARALLEL_TESTS);
+       memset(expectfiles, 0, sizeof(_stringlist *) * MAX_PARALLEL_TESTS);
+       memset(tags, 0, sizeof(_stringlist *) * MAX_PARALLEL_TESTS);
 
        scf = fopen(schedule, "r");
        if (!scf)
@@ -1444,9 +1546,9 @@ run_schedule(const char *schedule, test_function tfunc)
 
                if (num_tests == 1)
                {
-                       status(_("test %-20s ... "), tests[0]);
-                       pids[0] = (tfunc)(tests[0], &resultfiles[0], &expectfiles[0], &tags[0]);
-                       wait_for_tests(pids, NULL, 1);
+                       status(_("test %-24s ... "), tests[0]);
+                       pids[0] = (tfunc) (tests[0], &resultfiles[0], &expectfiles[0], &tags[0]);
+                       wait_for_tests(pids, statuses, NULL, 1);
                        /* status line is finished below */
                }
                else if (max_connections > 0 && max_connections < num_tests)
@@ -1459,12 +1561,14 @@ run_schedule(const char *schedule, test_function tfunc)
                        {
                                if (i - oldest >= max_connections)
                                {
-                                       wait_for_tests(pids + oldest, tests + oldest, i - oldest);
+                                       wait_for_tests(pids + oldest, statuses + oldest,
+                                                                  tests + oldest, i - oldest);
                                        oldest = i;
                                }
-                               pids[i] = (tfunc)(tests[i], &resultfiles[i], &expectfiles[i], &tags[i]);
+                               pids[i] = (tfunc) (tests[i], &resultfiles[i], &expectfiles[i], &tags[i]);
                        }
-                       wait_for_tests(pids + oldest, tests + oldest, i - oldest);
+                       wait_for_tests(pids + oldest, statuses + oldest,
+                                                  tests + oldest, i - oldest);
                        status_end();
                }
                else
@@ -1472,38 +1576,42 @@ run_schedule(const char *schedule, test_function tfunc)
                        status(_("parallel group (%d tests): "), num_tests);
                        for (i = 0; i < num_tests; i++)
                        {
-                               pids[i] = (tfunc)(tests[i], &resultfiles[i], &expectfiles[i], &tags[i]);
+                               pids[i] = (tfunc) (tests[i], &resultfiles[i], &expectfiles[i], &tags[i]);
                        }
-                       wait_for_tests(pids, tests, num_tests);
+                       wait_for_tests(pids, statuses, tests, num_tests);
                        status_end();
                }
 
                /* Check results for all tests */
                for (i = 0; i < num_tests; i++)
                {
-                       _stringlist *rl, *el, *tl;
-                       bool differ = false;
+                       _stringlist *rl,
+                                          *el,
+                                          *tl;
+                       bool            differ = false;
 
                        if (num_tests > 1)
-                               status(_("     %-20s ... "), tests[i]);
+                               status(_("     %-24s ... "), tests[i]);
 
                        /*
                         * Advance over all three lists simultaneously.
                         *
-                        * Compare resultfiles[j] with expectfiles[j] always.
-                        * Tags are optional but if there are tags, the tag list has the
-                        * same length as the other two lists.
+                        * Compare resultfiles[j] with expectfiles[j] always. Tags are
+                        * optional but if there are tags, the tag list has the same
+                        * length as the other two lists.
                         */
                        for (rl = resultfiles[i], el = expectfiles[i], tl = tags[i];
-                               rl != NULL; /* rl and el have the same length */
-                               rl = rl->next, el = el->next)
+                                rl != NULL;    /* rl and el have the same length */
+                                rl = rl->next, el = el->next)
                        {
-                               bool newdiff;
+                               bool            newdiff;
+
                                if (tl)
-                                       tl = tl->next; /* tl has the same lengt has rl and el if it exists */
+                                       tl = tl->next;          /* tl has the same length as rl and el
+                                                                                * if it exists */
 
                                newdiff = results_differ(tests[i], rl->str, el->str);
-                               if (newdiff && tl) 
+                               if (newdiff && tl)
                                {
                                        printf("%s ", tl->str);
                                }
@@ -1540,6 +1648,9 @@ run_schedule(const char *schedule, test_function tfunc)
                                success_count++;
                        }
 
+                       if (statuses[i] != 0)
+                               log_child_failure(statuses[i]);
+
                        status_end();
                }
        }
@@ -1554,33 +1665,38 @@ static void
 run_single_test(const char *test, test_function tfunc)
 {
        PID_TYPE        pid;
+       int                     exit_status;
        _stringlist *resultfiles = NULL;
        _stringlist *expectfiles = NULL;
        _stringlist *tags = NULL;
-       _stringlist *rl, *el, *tl;
+       _stringlist *rl,
+                          *el,
+                          *tl;
        bool            differ = false;
 
        status(_("test %-20s ... "), test);
-       pid = (tfunc)(test, &resultfiles, &expectfiles, &tags);
-       wait_for_tests(&pid, NULL, 1);
+       pid = (tfunc) (test, &resultfiles, &expectfiles, &tags);
+       wait_for_tests(&pid, &exit_status, NULL, 1);
 
        /*
         * Advance over all three lists simultaneously.
         *
-        * Compare resultfiles[j] with expectfiles[j] always.
-        * Tags are optional but if there are tags, the tag list has the
-        * same length as the other two lists.
+        * Compare resultfiles[j] with expectfiles[j] always. Tags are optional
+        * but if there are tags, the tag list has the same length as the other
+        * two lists.
         */
        for (rl = resultfiles, el = expectfiles, tl = tags;
-               rl != NULL; /* rl and el have the same length */
-               rl = rl->next, el = el->next)
+                rl != NULL;                    /* rl and el have the same length */
+                rl = rl->next, el = el->next)
        {
-               bool newdiff;
+               bool            newdiff;
+
                if (tl)
-                       tl = tl->next; /* tl has the same lengt has rl and el if it exists */
+                       tl = tl->next;          /* tl has the same length as rl and el if it
+                                                                * exists */
 
                newdiff = results_differ(test, rl->str, el->str);
-               if (newdiff && tl) 
+               if (newdiff && tl)
                {
                        printf("%s ", tl->str);
                }
@@ -1597,6 +1713,10 @@ run_single_test(const char *test, test_function tfunc)
                status(_("ok"));
                success_count++;
        }
+
+       if (exit_status != 0)
+               log_child_failure(exit_status);
+
        status_end();
 }
 
@@ -1650,22 +1770,25 @@ static void
 create_database(const char *dbname)
 {
        _stringlist *sl;
+
        /*
         * We use template0 so that any installation-local cruft in template1 will
         * not mess up the tests.
         */
        header(_("creating database \"%s\""), dbname);
        if (encoding)
-               psql_command("postgres", "CREATE DATABASE \"%s\" TEMPLATE=template0 ENCODING='%s'", dbname, encoding);
+               psql_command("postgres", "CREATE DATABASE \"%s\" TEMPLATE=template0 ENCODING='%s'%s", dbname, encoding,
+                                        (nolocale) ? " LC_COLLATE='C' LC_CTYPE='C'" : "");
        else
-               psql_command("postgres", "CREATE DATABASE \"%s\" TEMPLATE=template0", dbname);
-       psql_command(dbname, 
-               "ALTER DATABASE \"%s\" SET lc_messages TO 'C';"
-               "ALTER DATABASE \"%s\" SET lc_monetary TO 'C';"
-               "ALTER DATABASE \"%s\" SET lc_numeric TO 'C';"
-               "ALTER DATABASE \"%s\" SET lc_time TO 'C';"
-               "ALTER DATABASE \"%s\" SET timezone_abbreviations TO 'Default';",
-               dbname, dbname, dbname, dbname, dbname);
+               psql_command("postgres", "CREATE DATABASE \"%s\" TEMPLATE=template0%s", dbname,
+                                        (nolocale) ? " LC_COLLATE='C' LC_CTYPE='C'" : "");
+       psql_command(dbname,
+                                "ALTER DATABASE \"%s\" SET lc_messages TO 'C';"
+                                "ALTER DATABASE \"%s\" SET lc_monetary TO 'C';"
+                                "ALTER DATABASE \"%s\" SET lc_numeric TO 'C';"
+                                "ALTER DATABASE \"%s\" SET lc_time TO 'C';"
+                       "ALTER DATABASE \"%s\" SET timezone_abbreviations TO 'Default';",
+                                dbname, dbname, dbname, dbname, dbname);
 
        /*
         * Install any requested procedural languages
@@ -1685,15 +1808,43 @@ drop_role_if_exists(const char *rolename)
 }
 
 static void
-create_role(const char *rolename, const _stringlist *granted_dbs)
+create_role(const char *rolename, const _stringlist * granted_dbs)
 {
        header(_("creating role \"%s\""), rolename);
        psql_command("postgres", "CREATE ROLE \"%s\" WITH LOGIN", rolename);
        for (; granted_dbs != NULL; granted_dbs = granted_dbs->next)
        {
                psql_command("postgres", "GRANT ALL ON DATABASE \"%s\" TO \"%s\"",
-                       granted_dbs->str, rolename);
+                                        granted_dbs->str, rolename);
+       }
+}
+
+static char *
+make_absolute_path(const char *in)
+{
+       char       *result;
+
+       if (is_absolute_path(in))
+               result = strdup(in);
+       else
+       {
+               static char cwdbuf[MAXPGPATH];
+
+               if (!cwdbuf[0])
+               {
+                       if (!getcwd(cwdbuf, sizeof(cwdbuf)))
+                       {
+                               fprintf(stderr, _("could not get current working directory: %s\n"), strerror(errno));
+                               exit_nicely(2);
+                       }
+               }
+
+               result = malloc(strlen(cwdbuf) + strlen(in) + 2);
+               sprintf(result, "%s/%s", cwdbuf, in);
        }
+
+       canonicalize_path(result);
+       return result;
 }
 
 static void
@@ -1716,13 +1867,14 @@ help(void)
        printf(_("  --outputdir=DIR           place output files in DIR (default \".\")\n"));
        printf(_("  --schedule=FILE           use test ordering schedule from FILE\n"));
        printf(_("                            (can be used multiple times to concatenate)\n"));
-       printf(_("  --srcdir=DIR              absolute path to source directory (for VPATH builds)\n"));
+       printf(_("  --dlpath=DIR              look for dynamic libraries in DIR\n"));
        printf(_("  --temp-install=DIR        create a temporary installation in DIR\n"));
-       printf(_("  --no-locale               use C locale\n"));
        printf(_("\n"));
        printf(_("Options for \"temp-install\" mode:\n"));
+       printf(_("  --no-locale               use C locale\n"));
        printf(_("  --top-builddir=DIR        (relative) path to top level build directory\n"));
-       printf(_("  --temp-port=PORT          port number to start temp postmaster on\n"));
+       printf(_("  --port=PORT               start postmaster on PORT\n"));
+       printf(_("  --temp-config=PATH        append contents of PATH to temporary config\n"));
        printf(_("\n"));
        printf(_("Options for using an existing installation:\n"));
        printf(_("  --host=HOST               use postmaster running on HOST\n"));
@@ -1744,6 +1896,7 @@ regression_main(int argc, char *argv[], init_function ifunc, test_function tfunc
        int                     i;
        int                     option_index;
        char            buf[MAXPGPATH * 4];
+       char            buf2[MAXPGPATH * 4];
 
        static struct option long_options[] = {
                {"help", no_argument, NULL, 'h'},
@@ -1759,18 +1912,19 @@ regression_main(int argc, char *argv[], init_function ifunc, test_function tfunc
                {"temp-install", required_argument, NULL, 9},
                {"no-locale", no_argument, NULL, 10},
                {"top-builddir", required_argument, NULL, 11},
-               {"temp-port", required_argument, NULL, 12},
                {"host", required_argument, NULL, 13},
                {"port", required_argument, NULL, 14},
                {"user", required_argument, NULL, 15},
                {"psqldir", required_argument, NULL, 16},
-               {"srcdir", required_argument, NULL, 17},
+               {"dlpath", required_argument, NULL, 17},
                {"create-role", required_argument, NULL, 18},
+               {"temp-config", required_argument, NULL, 19},
+               {"use-existing", no_argument, NULL, 20},
                {NULL, 0, NULL, 0}
        };
 
        progname = get_progname(argv[0]);
-       set_pglocale_pgservice(argv[0], "pg_regress");
+       set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_regress"));
 
 #ifndef HAVE_UNIX_SOCKETS
        /* no unix domain sockets available, so change default */
@@ -1791,9 +1945,15 @@ regression_main(int argc, char *argv[], init_function ifunc, test_function tfunc
                                help();
                                exit_nicely(0);
                        case 'V':
-                               printf("pg_regress (PostgreSQL %s)\n", PG_VERSION);
+                               puts("pg_regress (PostgreSQL) " PG_VERSION);
                                exit_nicely(0);
                        case 1:
+
+                               /*
+                                * If a default database was specified, we need to remove it
+                                * before we add the specified one.
+                                */
+                               free_stringlist(&dblist);
                                split_to_stringlist(strdup(optarg), ", ", &dblist);
                                break;
                        case 2:
@@ -1818,22 +1978,7 @@ regression_main(int argc, char *argv[], init_function ifunc, test_function tfunc
                                add_stringlist_item(&schedulelist, optarg);
                                break;
                        case 9:
-                               /* temp_install must be absolute path */
-                               if (is_absolute_path(optarg))
-                                       temp_install = strdup(optarg);
-                               else
-                               {
-                                       char            cwdbuf[MAXPGPATH];
-
-                                       if (!getcwd(cwdbuf, sizeof(cwdbuf)))
-                                       {
-                                               fprintf(stderr, _("could not get current working directory: %s\n"), strerror(errno));
-                                               exit_nicely(2);
-                                       }
-                                       temp_install = malloc(strlen(cwdbuf) + strlen(optarg) + 2);
-                                       sprintf(temp_install, "%s/%s", cwdbuf, optarg);
-                               }
-                               canonicalize_path(temp_install);
+                               temp_install = make_absolute_path(optarg);
                                break;
                        case 10:
                                nolocale = true;
@@ -1841,20 +1986,12 @@ regression_main(int argc, char *argv[], init_function ifunc, test_function tfunc
                        case 11:
                                top_builddir = strdup(optarg);
                                break;
-                       case 12:
-                               {
-                                       int                     p = atoi(optarg);
-
-                                       /* Since Makefile isn't very bright, check port range */
-                                       if (p >= 1024 && p <= 65535)
-                                               temp_port = p;
-                               }
-                               break;
                        case 13:
                                hostname = strdup(optarg);
                                break;
                        case 14:
                                port = atoi(optarg);
+                               port_specified_by_user = true;
                                break;
                        case 15:
                                user = strdup(optarg);
@@ -1865,11 +2002,17 @@ regression_main(int argc, char *argv[], init_function ifunc, test_function tfunc
                                        psqldir = strdup(optarg);
                                break;
                        case 17:
-                               srcdir = strdup(optarg);
+                               dlpath = strdup(optarg);
                                break;
                        case 18:
                                split_to_stringlist(strdup(optarg), ", ", &extraroles);
                                break;
+                       case 19:
+                               temp_config = strdup(optarg);
+                               break;
+                       case 20:
+                               use_existing = true;
+                               break;
                        default:
                                /* getopt_long already emitted a complaint */
                                fprintf(stderr, _("\nTry \"%s -h\" for more information.\n"),
@@ -1887,8 +2030,18 @@ regression_main(int argc, char *argv[], init_function ifunc, test_function tfunc
                optind++;
        }
 
-       if (temp_install)
-               port = temp_port;
+       if (temp_install && !port_specified_by_user)
+
+               /*
+                * To reduce chances of interference with parallel installations, use
+                * a port number starting in the private range (49152-65535)
+                * calculated from the version number.
+                */
+               port = 0xC000 | (PG_VERSION_NUM & 0x3FFF);
+
+       inputdir = make_absolute_path(inputdir);
+       outputdir = make_absolute_path(outputdir);
+       dlpath = make_absolute_path(dlpath);
 
        /*
         * Initialization
@@ -1903,6 +2056,8 @@ regression_main(int argc, char *argv[], init_function ifunc, test_function tfunc
 
        if (temp_install)
        {
+               FILE       *pg_conf;
+
                /*
                 * Prepare the temp installation
                 */
@@ -1934,9 +2089,9 @@ regression_main(int argc, char *argv[], init_function ifunc, test_function tfunc
                                 SYSTEMQUOTE "\"%s\" -C \"%s\" DESTDIR=\"%s/install\" install with_perl=no with_python=no > \"%s/log/install.log\" 2>&1" SYSTEMQUOTE,
                                 makeprog, top_builddir, temp_install, outputdir);
 #else
-          snprintf(buf, sizeof(buf),
-                 SYSTEMQUOTE "perl \"%s/src/tools/msvc/install.pl\" \"%s/install\" >\"%s/log/install.log\" 2>&1" SYSTEMQUOTE,
-             top_builddir, temp_install, outputdir);
+               snprintf(buf, sizeof(buf),
+                                SYSTEMQUOTE "perl \"%s/src/tools/msvc/install.pl\" \"%s/install\" >\"%s/log/install.log\" 2>&1" SYSTEMQUOTE,
+                                top_builddir, temp_install, outputdir);
 #endif
                if (system(buf))
                {
@@ -1958,6 +2113,73 @@ regression_main(int argc, char *argv[], init_function ifunc, test_function tfunc
                        exit_nicely(2);
                }
 
+               /*
+                * Adjust the default postgresql.conf as needed for regression
+                * testing. The user can specify a file to be appended; in any case we
+                * set max_prepared_transactions to enable testing of prepared xacts.
+                * (Note: to reduce the probability of unexpected shmmax failures,
+                * don't set max_prepared_transactions any higher than actually needed
+                * by the prepared_xacts regression test.)
+                */
+               snprintf(buf, sizeof(buf), "%s/data/postgresql.conf", temp_install);
+               pg_conf = fopen(buf, "a");
+               if (pg_conf == NULL)
+               {
+                       fprintf(stderr, _("\n%s: could not open \"%s\" for adding extra config: %s\n"), progname, buf, strerror(errno));
+                       exit_nicely(2);
+               }
+               fputs("\n# Configuration added by pg_regress\n\n", pg_conf);
+               fputs("max_prepared_transactions = 2\n", pg_conf);
+
+               if (temp_config != NULL)
+               {
+                       FILE       *extra_conf;
+                       char            line_buf[1024];
+
+                       extra_conf = fopen(temp_config, "r");
+                       if (extra_conf == NULL)
+                       {
+                               fprintf(stderr, _("\n%s: could not open \"%s\" to read extra config: %s\n"), progname, temp_config, strerror(errno));
+                               exit_nicely(2);
+                       }
+                       while (fgets(line_buf, sizeof(line_buf), extra_conf) != NULL)
+                               fputs(line_buf, pg_conf);
+                       fclose(extra_conf);
+               }
+
+               fclose(pg_conf);
+
+               /*
+                * Check if there is a postmaster running already.
+                */
+               snprintf(buf2, sizeof(buf2),
+                                SYSTEMQUOTE "\"%s/psql\" -X postgres <%s 2>%s" SYSTEMQUOTE,
+                                bindir, DEVNULL, DEVNULL);
+
+               for (i = 0; i < 16; i++)
+               {
+                       if (system(buf2) == 0)
+                       {
+                               char            s[16];
+
+                               if (port_specified_by_user || i == 15)
+                               {
+                                       fprintf(stderr, _("port %d apparently in use\n"), port);
+                                       if (!port_specified_by_user)
+                                               fprintf(stderr, _("%s: could not determine an available port\n"), progname);
+                                       fprintf(stderr, _("Specify an unused port using the --port option or shut down any conflicting PostgreSQL servers.\n"));
+                                       exit_nicely(2);
+                               }
+
+                               fprintf(stderr, _("port %d apparently in use, trying %d\n"), port, port + 1);
+                               port++;
+                               sprintf(s, "%d", port);
+                               doputenv("PGPORT", s);
+                       }
+                       else
+                               break;
+               }
+
                /*
                 * Start the temp postmaster
                 */
@@ -1981,13 +2203,10 @@ regression_main(int argc, char *argv[], init_function ifunc, test_function tfunc
                 * second or so, but Cygwin is reportedly *much* slower).  Don't wait
                 * forever, however.
                 */
-               snprintf(buf, sizeof(buf),
-                                SYSTEMQUOTE "\"%s/psql\" -X postgres <%s 2>%s" SYSTEMQUOTE,
-                                bindir, DEVNULL, DEVNULL);
                for (i = 0; i < 60; i++)
                {
                        /* Done if psql succeeds */
-                       if (system(buf) == 0)
+                       if (system(buf2) == 0)
                                break;
 
                        /*
@@ -2032,7 +2251,7 @@ regression_main(int argc, char *argv[], init_function ifunc, test_function tfunc
                postmaster_running = true;
 
                printf(_("running on port %d with pid %lu\n"),
-                          temp_port, (unsigned long) postmaster_pid);
+                          port, (unsigned long) postmaster_pid);
        }
        else
        {
@@ -2040,19 +2259,25 @@ regression_main(int argc, char *argv[], init_function ifunc, test_function tfunc
                 * Using an existing installation, so may need to get rid of
                 * pre-existing database(s) and role(s)
                 */
-               for (sl = dblist; sl; sl = sl->next)
-                       drop_database_if_exists(sl->str);
-               for (sl = extraroles; sl; sl = sl->next)
-                       drop_role_if_exists(sl->str);
+               if (!use_existing)
+               {
+                       for (sl = dblist; sl; sl = sl->next)
+                               drop_database_if_exists(sl->str);
+                       for (sl = extraroles; sl; sl = sl->next)
+                               drop_role_if_exists(sl->str);
+               }
        }
 
        /*
         * Create the test database(s) and role(s)
         */
-       for (sl = dblist; sl; sl = sl->next)
-               create_database(sl->str);
-       for (sl = extraroles; sl; sl = sl->next)
-               create_role(sl->str, dblist);
+       if (!use_existing)
+       {
+               for (sl = dblist; sl; sl = sl->next)
+                       create_database(sl->str);
+               for (sl = extraroles; sl; sl = sl->next)
+                       create_role(sl->str, dblist);
+       }
 
        /*
         * Ready to run the tests