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[Support][Path] Don't inf loop if creating the parent directory fails. 

Patch by Paul Robinson.

llvm-svn: 176908
This commit is contained in:
Michael J. Spencer 2013-03-12 22:32:39 +00:00
parent a4f770d51c
commit 20a11b2534
1 changed files with 7 additions and 1 deletions
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8
llvm/lib/Support/Windows/PathV2.inc
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@ -593,6 +593,10 @@ retry_random_path:
random_path_utf16.push_back(0);
random_path_utf16.pop_back();
// Make sure we don't fall into an infinite loop by constantly trying
// to create the parent path.
bool TriedToCreateParent = false;
// Try to create + open the path.
retry_create_file:
HANDLE TempFileHandle = ::CreateFileW(random_path_utf16.begin(),
@ -610,7 +614,9 @@ retry_create_file:
if (ec == windows_error::file_exists)
goto retry_random_path;
// Check for non-existing parent directories.
if (ec == windows_error::path_not_found) {
if (ec == windows_error::path_not_found && !TriedToCreateParent) {
TriedToCreateParent = true;
// Create the directories using result_path as temp storage.
if (error_code ec = UTF16ToUTF8(random_path_utf16.begin(),
random_path_utf16.size(), result_path))