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Enable use of sigaltstack for signal handlers when available. With this,

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backtraces from the signal handler on stack overflow now work reliably (on my
system at least...).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@270395 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Richard Smith 2016-05-23 06:47:37 +00:00
parent 4de68f2b6c
commit 5d0c349a51
1 changed files with 1 additions and 1 deletions
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2
lib/Support/Unix/Signals.inc
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@ -107,7 +107,7 @@ static void RegisterHandler(int Signal) {
struct sigaction NewHandler;
NewHandler.sa_handler = SignalHandler;
NewHandler.sa_flags = SA_NODEFER|SA_RESETHAND;
NewHandler.sa_flags = SA_NODEFER | SA_RESETHAND | SA_ONSTACK;
sigemptyset(&NewHandler.sa_mask);
// Install the new handler, save the old one in RegisteredSignalInfo.