Only print the stack trace if it was requested. Previously, any call into

the Signals module that registered the handlers would cause the stack trace
to be generated. Now, you must explicitly call PrintStackTraceOnErrorSignal
in order for that to happen.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28810 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 1 deletions

diff --git a/lib/System/Unix/Signals.inc b/lib/System/Unix/Signals.inc
index a643dbf..4096ad2 100644
--- a/lib/System/Unix/Signals.inc
+++ b/lib/System/Unix/Signals.inc
@@ -24,6 +24,8 @@
 
 namespace {
 
+bool StackTraceRequested = false; 
+
 /// InterruptFunction - The function to call if ctrl-c is pressed.
 void (*InterruptFunction)() = 0;
 
@@ -132,7 +134,8 @@ RETSIGTYPE SignalHandler(int Sig) {
 
   // Otherwise if it is a fault (like SEGV) output the stacktrace to
   // STDERR (if we can) and reissue the signal to die...
-  PrintStackTrace();
+  if (StackTraceRequested)
+    PrintStackTrace();
   signal(Sig, SIG_DFL);
 }
 
@@ -178,6 +181,7 @@ void sys::RemoveDirectoryOnSignal(const llvm::sys::Path& path) {
 /// PrintStackTraceOnErrorSignal - When an error signal (such as SIBABRT or
 /// SIGSEGV) is delivered to the process, print a stack trace and then exit.
 void sys::PrintStackTraceOnErrorSignal() {
+  StackTraceRequested = true;
   std::for_each(KillSigs, KillSigsEnd, RegisterHandler);
 }