From: Douglas Gregor <dgregor@apple.com>
Date: Mon, 26 Jul 2010 23:54:23 +0000 (+0000)
Subject: When remapping a virtual file, also make an entry for the file with
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=3e15e0a7b4da6d906357b00b1bd2bba5ec3195ed;p=clang

When remapping a virtual file, also make an entry for the file with
its absolute path on disk. Also, introduce a fun test for the
precompiled preamble, which almost works...


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109470 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Basic/FileManager.cpp b/lib/Basic/FileManager.cpp
index 3c91a0f875..aa175cb1a6 100644
--- a/lib/Basic/FileManager.cpp
+++ b/lib/Basic/FileManager.cpp
@@ -365,6 +365,18 @@ FileManager::getVirtualFile(llvm::StringRef Filename, off_t Size,
   UFE->ModTime = ModificationTime;
   UFE->Dir     = DirInfo;
   UFE->UID     = NextFileUID++;
+  
+  // If this virtual file resolves to a file, also map that file to the 
+  // newly-created file entry.
+  const char *InterndFileName = NamedFileEnt.getKeyData();
+  struct stat StatBuf;
+  if (!stat_cached(InterndFileName, &StatBuf) &&
+      !S_ISDIR(StatBuf.st_mode)) {
+    llvm::sys::Path FilePath(InterndFileName);
+    FilePath.makeAbsolute();
+    FileEntries[FilePath.str()] = UFE;
+  }
+  
   return UFE;
 }
 
diff --git a/test/Index/Inputs/preamble.h b/test/Index/Inputs/preamble.h
new file mode 100644
index 0000000000..e588c12ddc
--- /dev/null
+++ b/test/Index/Inputs/preamble.h
@@ -0,0 +1 @@
+int bar(int);
diff --git a/test/Index/Inputs/prefix.h b/test/Index/Inputs/prefix.h
new file mode 100644
index 0000000000..82ba2da360
--- /dev/null
+++ b/test/Index/Inputs/prefix.h
@@ -0,0 +1,4 @@
+#ifndef PREFIX_H
+#define PREFIX_H
+int foo(int);
+#endif
diff --git a/test/Index/preamble.c b/test/Index/preamble.c
new file mode 100644
index 0000000000..ad64a43554
--- /dev/null
+++ b/test/Index/preamble.c
@@ -0,0 +1,13 @@
+#include "prefix.h"
+#include "preamble.h"
+int wibble(int);
+
+// FIXME: Turn on use of preamble files
+
+// RUN: %clang -x c-header -o %t.pch %S/Inputs/prefix.h
+// RUN: c-index-test -test-load-source-reparse 5 local -I %S/Inputs -include %t %s | FileCheck %s
+
+// CHECK: preamble.h:1:5: FunctionDecl=bar:1:5 Extent=[1:5 - 1:13]
+// CHECK: preamble.h:1:12: ParmDecl=:1:12 (Definition) Extent=[1:9 - 1:13]
+// CHECK: preamble.c:3:5: FunctionDecl=wibble:3:5 Extent=[3:5 - 3:16]
+// CHECK: preamble.c:3:15: ParmDecl=:3:15 (Definition) Extent=[3:12 - 3:16]