bug fix

src/platform-posix.cc

Index: src/platform-posix.cc
diff --git a/src/platform-posix.cc b/src/platform-posix.cc
index 83f6c8112edf0732e4de957779e393d13d2deda3..c53881a244fb786e9d649ad8664f941262dd7c6c 100644
--- a/src/platform-posix.cc
+++ b/src/platform-posix.cc
@@ -37,6 +37,7 @@
 #include <sys/resource.h>
 #include <sys/time.h>
 #include <sys/types.h>
+#include <sys/stat.h>
 
 #include <arpa/inet.h>
 #include <netinet/in.h>
@@ -130,7 +131,10 @@ int OS::GetLastError() {
 //
 
 FILE* OS::FOpen(const char* path, const char* mode) {
-  return fopen(path, mode);
+  struct stat file_stat;
+  if (stat(path, &file_stat) == 0 && (file_stat.st_mode & S_IFREG))

[Yang, 2011/07/11 13:40:52]

check whether the file to be opened is a regular (S_IFREG) file before actually
trying to open it.

+    return fopen(path, mode);
+  return NULL;
 }