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Diffstat (limited to 'test/CodeGen/variadic-null-win64.c')
| -rw-r--r-- | test/CodeGen/variadic-null-win64.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/test/CodeGen/variadic-null-win64.c b/test/CodeGen/variadic-null-win64.c new file mode 100644 index 0000000..4f57e7b --- /dev/null +++ b/test/CodeGen/variadic-null-win64.c @@ -0,0 +1,17 @@ +// 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) |
