mirror of
https://github.com/llvm/llvm-project.git
synced 2025-05-01 09:26:09 +00:00
79b0fd7a48
Make it possible to pass NULL through variadic functions on 64-bit Windows targets. The Visual C++ headers define NULL to 0, when they should define it to 0LL on Win64 so that NULL is a pointer-sized integer. Fixes PR20949. Reviewers: thakis, rsmith Differential Revision: http://reviews.llvm.org/D5480 llvm-svn: 219456
18 lines
738 B
C
18 lines
738 B
C
// 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 to a pointer-sized integer.
|
|
|
|
#define NULL 0
|
|
|
|
void v(const char *f, ...);
|
|
void f(const char *f) {
|
|
v(f, 1, 2, 3, NULL);
|
|
}
|
|
// WINDOWS: define void @f(i8* %f)
|
|
// WINDOWS: call void (i8*, ...)* @v(i8* {{.*}}, i32 1, i32 2, i32 3, i64 0)
|
|
// LINUX: define void @f(i8* %f)
|
|
// LINUX: call void (i8*, ...)* @v(i8* {{.*}}, i32 1, i32 2, i32 3, i32 0)
|