From: Bill Wendling <isanbard@gmail.com>
Date: Mon, 19 Dec 2011 23:53:28 +0000 (+0000)
Subject: Mark the calls to the _setjmp function as returns twice. <rdar://problem/10492556>
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=6446c3e3600032c5f17ca2324a4581b9301afa59;p=clang

Mark the calls to the _setjmp function as returns twice. <rdar://problem/10492556>

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146926 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/CGObjCMac.cpp b/lib/CodeGen/CGObjCMac.cpp
index c3cca394a8..121395676f 100644
--- a/lib/CodeGen/CGObjCMac.cpp
+++ b/lib/CodeGen/CGObjCMac.cpp
@@ -3045,6 +3045,7 @@ void CGObjCMac::EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF,
   llvm::CallInst *SetJmpResult =
     CGF.Builder.CreateCall(ObjCTypes.getSetJmpFn(), SetJmpBuffer, "setjmp_result");
   SetJmpResult->setDoesNotThrow();
+  SetJmpResult->setCanReturnTwice();
 
   // If setjmp returned 0, enter the protected block; otherwise,
   // branch to the handler.
@@ -3110,6 +3111,7 @@ void CGObjCMac::EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF,
         CGF.Builder.CreateCall(ObjCTypes.getSetJmpFn(), SetJmpBuffer,
                                "setjmp.result");
       SetJmpResult->setDoesNotThrow();
+      SetJmpResult->setCanReturnTwice();
 
       llvm::Value *Threw =
         CGF.Builder.CreateIsNotNull(SetJmpResult, "did_catch_exception");