From d6bebbfd510f3b495795b88aafd10ead3cb211e9 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.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73938 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/CGCall.cpp   | 3 ++-
 test/CodeGen/functions.c | 4 ++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/CodeGen/CGCall.cpp b/lib/CodeGen/CGCall.cpp
index ec6058afd9..30c5d28c22 100644
--- a/lib/CodeGen/CGCall.cpp
+++ b/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/test/CodeGen/functions.c b/test/CodeGen/functions.c
index 985599216e..12dff1b72c 100644
--- a/test/CodeGen/functions.c
+++ b/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); }
-- 
2.40.0