From: Reid Spencer <rspencer@reidspencer.com>
Date: Fri, 16 Jun 2006 00:00:57 +0000 (+0000)
Subject: Only print the stack trace if it was requested. Previously, any call into
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=dc6830ff255a4fb9afd7683dd8a4cc0a342b44ee;p=oota-llvm.git

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
---

diff --git a/lib/System/Unix/Signals.inc b/lib/System/Unix/Signals.inc
index a643dbf972c..4096ad27273 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);
 }