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