From 9a477ee926e77b0eb99bca9a3e7e41629dc3021b Mon Sep 17 00:00:00 2001
From: Anton Mitrokhin <anton.mitrokhin@phystech.edu>
Date: Mon, 23 Nov 2015 16:52:07 +0300
Subject: [PATCH] Fix bug in cbackend

---
 cbackend.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/cbackend.cpp b/cbackend.cpp
index 07af589c..5e85ccd9 100644
--- a/cbackend.cpp
+++ b/cbackend.cpp
@@ -4199,8 +4199,9 @@ void CWriter::visitCallInst(llvm::CallInst &I) {
 #else /* LLVM 3.3+ */
   const llvm::AttributeSet &PAL = I.getAttributes();
 #endif
+
   bool hasByVal = I.hasByValArgument();
-  bool isStructRet = I.hasStructRetAttr();
+  bool isStructRet = (I.getNumArgOperands() > 0) && I.hasStructRetAttr();
   if (isStructRet) {
     writeOperandDeref(I.getArgOperand(0));
     Out << " = ";