From 4c8da96ea9ca4baeefbcf425fda253d3bfb693b9 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Tue, 23 Jun 2009 01:38:41 +0000
Subject: [PATCH] fix PR4423.

llvm-svn: 73938
---
 clang/lib/CodeGen/CGCall.cpp   | 3 ++-
 clang/test/CodeGen/functions.c | 4 ++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/clang/lib/CodeGen/CGCall.cpp b/clang/lib/CodeGen/CGCall.cpp
index ec6058afd963..30c5d28c227e 100644
--- a/clang/lib/CodeGen/CGCall.cpp
+++ b/clang/lib/CodeGen/CGCall.cpp
@@ -763,7 +763,8 @@ RValue CodeGenFunction::EmitCall(const CGFunctionInfo &CallInfo,
       
       if (CE->getOpcode() == llvm::Instruction::BitCast &&
           ActualFT->getReturnType() == CurFT->getReturnType() &&
-          ActualFT->getNumParams() == CurFT->getNumParams()) {
+          ActualFT->getNumParams() == CurFT->getNumParams() &&
+          ActualFT->getNumParams() == Args.size()) {
         bool ArgsMatch = true;
         for (unsigned i = 0, e = ActualFT->getNumParams(); i != e; ++i)
           if (ActualFT->getParamType(i) != CurFT->getParamType(i)) {
diff --git a/clang/test/CodeGen/functions.c b/clang/test/CodeGen/functions.c
index 985599216e1c..12dff1b72cbc 100644
--- a/clang/test/CodeGen/functions.c
+++ b/clang/test/CodeGen/functions.c
@@ -33,3 +33,7 @@ void f1() {}
 // RUN: grep 'define .* @f3' %t | not grep -F '...'
 struct foo { int X, Y, Z; } f3() {
 }
+
+// PR4423 - This shouldn't crash in codegen
+void f4() {}
+void f5() { f4(42); }
-- 
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