| // RUN: %clang_cc1 %s -emit-llvm -o - -triple x86_64-windows-msvc | FileCheck %s --check-prefix=WINDOWS |
| // RUN: %clang_cc1 %s -emit-llvm -o - -triple x86_64-linux | FileCheck %s --check-prefix=LINUX |
| |
| // Make it possible to pass NULL through variadic functions on platforms where |
| // NULL has an integer type that is more narrow than a pointer. On such |
| // platforms we widen null pointer constants passed to variadic functions to a |
| // pointer-sized integer. We don't apply this special case to K&R-style |
| // unprototyped functions, because MSVC doesn't either. |
| |
| #define NULL 0 |
| |
| void v(const char *f, ...); |
| void kr(); |
| void f(const char *f) { |
| v(f, 1, 2, 3, NULL); |
| kr(f, 1, 2, 3, 0); |
| } |
| // WINDOWS: define dso_local void @f(i8* %f) |
| // WINDOWS: call void (i8*, ...) @v(i8* {{.*}}, i32 1, i32 2, i32 3, i64 0) |
| // WINDOWS: call void bitcast (void (...)* @kr to void (i8*, i32, i32, i32, i32)*)(i8* {{.*}}, i32 1, i32 2, i32 3, i32 0) |
| // LINUX: define void @f(i8* %f) |
| // LINUX: call void (i8*, ...) @v(i8* {{.*}}, i32 1, i32 2, i32 3, i32 0) |
| // LINUX: call void (i8*, i32, i32, i32, i32, ...) bitcast (void (...)* @kr to void (i8*, i32, i32, i32, i32, ...)*)(i8* {{.*}}, i32 1, i32 2, i32 3, i32 0) |
