From b7253150abd05d0a8bbc477b7045ed219ddba9e2 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Sun, 12 Apr 2009 23:33:13 +0000
Subject: [PATCH] fix PR3965:SIGINT handler not restored after calling
 ParseAST(), patch by Alexei Svitkine!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68929 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/System/Unix/Signals.inc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/System/Unix/Signals.inc b/lib/System/Unix/Signals.inc
index be22bd83fc0..e385e0c5566 100644
--- a/lib/System/Unix/Signals.inc
+++ b/lib/System/Unix/Signals.inc
@@ -126,7 +126,8 @@ static RETSIGTYPE SignalHandler(int Sig) {
       IF();        // run the interrupt function.
       return;
     }
-    exit(1);   // If this is an interrupt signal, exit the program
+    raise(Sig);   // Execute the default handler.
+    return;
   }
 
   // Otherwise if it is a fault (like SEGV) run any handler.