From: John Ellson <ellson@research.att.com>
Date: Thu, 16 Aug 2012 12:07:47 +0000 (-0400)
Subject: avoid "lvalue" warning when compiling with gcc (such as on MinGW)
X-Git-Tag: LAST_LIBGRAPH~32^2~347
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=92e77f5c4c273e2a6df56fed5aa10971016955d7;p=graphviz

avoid "lvalue" warning when compiling with gcc (such as on MinGW)
---

diff --git a/lib/gvc/regex_win32.c b/lib/gvc/regex_win32.c
index fdf78171b..0c4c5f8c4 100644
--- a/lib/gvc/regex_win32.c
+++ b/lib/gvc/regex_win32.c
@@ -3645,19 +3645,19 @@ re_search_2(struct re_pattern_buffer *bufp,
 
 /* Free everything we malloc.  */
 #ifdef MATCH_MAY_ALLOCATE
-#define FREE_VAR(var) if (var) REGEX_FREE (var); var = NULL
+#define FREE_VAR(var) if (var) REGEX_FREE ((void*)var); var = NULL
 #define FREE_VARIABLES()                                                \
   do {                                                                  \
     REGEX_FREE_STACK (fail_stack.stack);                                \
-    FREE_VAR ((void*) regstart);                                        \
-    FREE_VAR ((void*) regend);                                          \
-    FREE_VAR ((void*) old_regstart);                                    \
-    FREE_VAR ((void*) old_regend);                                      \
-    FREE_VAR ((void*) best_regstart);                                   \
-    FREE_VAR ((void*) best_regend);                                     \
-    FREE_VAR ((void*) reg_info);                                        \
-    FREE_VAR ((void*) reg_dummy);                                       \
-    FREE_VAR ((void*) reg_info_dummy);                                  \
+    FREE_VAR (regstart);                                                \
+    FREE_VAR (regend);                                                  \
+    FREE_VAR (old_regstart);                                            \
+    FREE_VAR (old_regend);                                              \
+    FREE_VAR (best_regstart);                                           \
+    FREE_VAR (best_regend);                                             \
+    FREE_VAR (reg_info);                                                \
+    FREE_VAR (reg_dummy);                                               \
+    FREE_VAR (reg_info_dummy);                                          \
   } while (0)
 #else
 #define FREE_VARIABLES() ((void)0) /* Do nothing!  But inhibit gcc warning.  */