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Fix bug where sys::Wait could wait on wrong pid.

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Setting ChildPid to -1 would cause waitpid to wait for any child process.

Patch by Daniel Reynaud!

llvm-svn: 220717
This commit is contained in:
Rafael Espindola
2014-10-27 20:30:04 +00:00
parent b494e5d198
commit 5f13d6461b
1 changed files with 0 additions and 1 deletions
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llvm/lib/Support/Unix/Program.inc
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@@ -335,7 +335,6 @@ ProcessInfo sys::Wait(const ProcessInfo &PI, unsigned SecondsToWait,
pid_t ChildPid = PI.Pid; pid_t ChildPid = PI.Pid;
if (WaitUntilTerminates) { if (WaitUntilTerminates) {
SecondsToWait = 0; SecondsToWait = 0;
ChildPid = -1; // mimic a wait() using waitpid()
} else if (SecondsToWait) { } else if (SecondsToWait) {
// Install a timeout handler. The handler itself does nothing, but the // Install a timeout handler. The handler itself does nothing, but the
// simple fact of having a handler at all causes the wait below to return // simple fact of having a handler at all causes the wait below to return