From 6389ef98544cc30af48caa15334d6cea88697117 Mon Sep 17 00:00:00 2001
From: Rafael Espindola <rafael.espindola@gmail.com>
Date: Tue, 17 Jul 2007 13:34:23 +0000
Subject: [PATCH] detect invalid combination of sret and byval

llvm-svn: 39971
---
 llvm/lib/VMCore/Verifier.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/llvm/lib/VMCore/Verifier.cpp b/llvm/lib/VMCore/Verifier.cpp
index a40d197aa29c..cbb34f09e46d 100644
--- a/llvm/lib/VMCore/Verifier.cpp
+++ b/llvm/lib/VMCore/Verifier.cpp
@@ -377,6 +377,10 @@ void Verifier::visitFunction(Function &F) {
       if (Attrs->paramHasAttr(Idx, ParamAttr::ByVal)) {
         Assert1(isa<PointerType>(FT->getParamType(Idx-1)),
                 "Attribute ByVal should only apply to pointer to structs!", &F);
+
+        Assert1(!Attrs->paramHasAttr(Idx, ParamAttr::StructRet),
+                "Attributes ByVal and StructRet are incompatible!", &F);
+
         const PointerType *Ty =
             cast<PointerType>(FT->getParamType(Idx-1));
         Assert1(isa<StructType>(Ty->getElementType()),