From: Fangrui Song <maskray@google.com>
Date: Tue, 17 Sep 2019 09:56:55 +0000 (+0000)
Subject: [SimplifyLibCalls] Fix -Wunused-result after D53342/r372091
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=2920626e0240e53d974f2209487adef104d5799c;p=llvm

[SimplifyLibCalls] Fix -Wunused-result after D53342/r372091

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@372096 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Utils/SimplifyLibCalls.cpp b/lib/Transforms/Utils/SimplifyLibCalls.cpp
index 9dfb016ded2..526988d6d89 100644
--- a/lib/Transforms/Utils/SimplifyLibCalls.cpp
+++ b/lib/Transforms/Utils/SimplifyLibCalls.cpp
@@ -612,7 +612,8 @@ Value *LibCallSimplifier::optimizeStrNCpy(CallInst *CI, IRBuilder<> &B) {
     // strncpy(x, "", y) -> memset(align 1 x, '\0', y)
     CallInst *NewCI = B.CreateMemSet(Dst, B.getInt8('\0'), Size, 1);
     AttrBuilder ArgAttrs(CI->getAttributes().getParamAttributes(0));
-    NewCI->getAttributes().addParamAttributes(CI->getContext(), 0, ArgAttrs);
+    NewCI->setAttributes(NewCI->getAttributes().addParamAttributes(
+        CI->getContext(), 0, ArgAttrs));
     return Dst;
   }