Merge 82194 from mainline.

tlattner · tlattner · commit b2d5a6d2e120 · 2009-09-18T05:10:35.000Z
don't stick an uninitialized 'stat' buf into the stat cache, fill it
with zeros.  This avoids a GCC warning (PR5000)

llvm-svn: 82195
diff --git a/clang/lib/Basic/FileManager.cpp b/clang/lib/Basic/FileManager.cpp
@@ -293,6 +293,7 @@ int MemorizeStatCalls::stat(const char *path, struct stat *buf) {
   if (result != 0) { 
     // Cache failed 'stat' results.
     struct stat empty;
+    memset(&empty, 0, sizeof(empty));
     StatCalls[path] = StatResult(result, empty);
   }
   else if (!S_ISDIR(buf->st_mode) || llvm::sys::Path(path).isAbsolute()) {

Original file line number	Diff line number	Diff line change
`@@ -293,6 +293,7 @@ int MemorizeStatCalls::stat(const char path, struct stat buf) {`
`293`	`293`	`if (result != 0) {`
`294`	`294`	`// Cache failed 'stat' results.`
`295`	`295`	`struct stat empty;`
	`296`	`+ memset(&empty, 0, sizeof(empty));`
`296`	`297`	`StatCalls[path] = StatResult(result, empty);`
`297`	`298`	`}`
`298`	`299`	`else if (!S_ISDIR(buf->st_mode) \|\| llvm::sys::Path(path).isAbsolute()) {`