From: Chris Lattner <sabre@nondot.org>
Date: Fri, 27 Apr 2007 17:02:33 +0000 (+0000)
Subject: reset errno to zero on entry to the application's main function.  This fixes
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=020403209a86a3b4d210a4bc62b37ee5cf49dec8;p=oota-llvm.git

reset errno to zero on entry to the application's main function.  This fixes
MultiSource/Applications/minisat in the JIT.

Note that the libsystem stuff should ideally never modify errno.  :(


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36508 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/tools/lli/lli.cpp b/tools/lli/lli.cpp
index 225180b8cae..89e4be6b5f9 100644
--- a/tools/lli/lli.cpp
+++ b/tools/lli/lli.cpp
@@ -28,7 +28,7 @@
 #include "llvm/System/Process.h"
 #include "llvm/System/Signals.h"
 #include <iostream>
-
+#include <cerrno>
 using namespace llvm;
 
 namespace {
@@ -128,6 +128,10 @@ int main(int argc, char **argv, char * const *envp) {
     // function later on to make an explicit call, so get the function now. 
     Constant *Exit = Mod->getOrInsertFunction("exit", Type::VoidTy,
                                                           Type::Int32Ty, NULL);
+    
+    // Reset errno to zero on entry to main.
+    errno = 0;
+   
     // Run static constructors.
     EE->runStaticConstructorsDestructors(false);