From f405dd62ecd67d8d4d389620d7c3949af0707bdc Mon Sep 17 00:00:00 2001
From: Argyrios Kyrtzidis <akyrtzi@gmail.com>
Date: Sat, 23 Nov 2013 18:41:35 +0000
Subject: [CodeGen] If there is a function definition with duplicate mangled
 name, emit an error instead of asserting.

rdar://15522601 & http://llvm.org/PR18031

llvm-svn: 195556
---
 clang/lib/CodeGen/CodeGenModule.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'clang/lib/CodeGen/CodeGenModule.cpp')

diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp
index 8240f8d..2acb2ec 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -2100,6 +2100,10 @@ void CodeGenModule::EmitGlobalFunctionDefinition(GlobalDecl GD) {
     Entry = CE->getOperand(0);
   }
 
+  if (!cast<llvm::GlobalValue>(Entry)->isDeclaration()) {
+    getDiags().Report(D->getLocation(), diag::err_duplicate_mangled_name);
+    return;
+  }
 
   if (cast<llvm::GlobalValue>(Entry)->getType()->getElementType() != Ty) {
     llvm::GlobalValue *OldFn = cast<llvm::GlobalValue>(Entry);
-- 
cgit v1.1