Add a helper function
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29049 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/System/Win32/Win32.h b/lib/System/Win32/Win32.h
index 7ed1047..d102991 100644
--- a/lib/System/Win32/Win32.h
+++ b/lib/System/Win32/Win32.h
@@ -24,6 +24,16 @@
#include <cassert>
#include <string>
+inline bool GetError(const std::string &Prefix, std::string *Dest) {
+ if (Dest == 0) return;
+ char *buffer = NULL;
+ FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM,
+ NULL, GetLastError(), 0, (LPSTR)&buffer, 1, NULL);
+ *Dest = Prefix + buffer;
+ LocalFree(buffer);
+ return true;
+}
+
inline void ThrowError(const std::string& msg) {
char *buffer = NULL;
FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM,