fix PR4423.

llvm-svn: 73938

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)) {

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); }