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<rdar://problem/13551789> Fix yet another race in unique_file.

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If the directory that will contain the unique file doesn't exist when
we tried to create the file, but another process creates it before we
get a chance to try creating it, we would bail out rather than try to
create the unique file.

llvm-svn: 178908
This commit is contained in:
Douglas Gregor 2013-04-05 20:48:36 +00:00
parent 61add4113e
commit abdef6977d
1 changed files with 1 additions and 3 deletions
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4
lib/Support/Unix/PathV2.inc
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@ -430,9 +430,7 @@ rety_open_create:
if (SavedErrno == errc::file_exists)
goto retry_random_path;
// If path prefix doesn't exist, try to create it.
if (SavedErrno == errc::no_such_file_or_directory &&
!exists(path::parent_path(RandomPath)) &&
!TriedToCreateParent) {
if (SavedErrno == errc::no_such_file_or_directory && !TriedToCreateParent) {
TriedToCreateParent = true;
StringRef p(RandomPath);
SmallString<64> dir_to_create;