| 1 | // RUN: %clang_cc1 %s -emit-llvm -o - -triple x86_64-windows-msvc | FileCheck %s --check-prefix=WINDOWS |
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| 2 | // RUN: %clang_cc1 %s -emit-llvm -o - -triple x86_64-linux | FileCheck %s --check-prefix=LINUX |
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| 3 | |
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| 4 | // Make it possible to pass NULL through variadic functions on platforms where |
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| 5 | // NULL has an integer type that is more narrow than a pointer. On such |
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| 6 | // platforms we widen null pointer constants passed to variadic functions to a |
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| 7 | // pointer-sized integer. We don't apply this special case to K&R-style |
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| 8 | // unprototyped functions, because MSVC doesn't either. |
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| 9 | |
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| 10 | #define NULL 0 |
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| 11 | |
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| 12 | void v(const char *f, ...); |
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| 13 | void kr(); |
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| 14 | void f(const char *f) { |
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| 15 | v(f, 1, 2, 3, NULL); |
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| 16 | kr(f, 1, 2, 3, 0); |
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| 17 | } |
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| 18 | // WINDOWS: define dso_local void @f(i8* %f) |
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| 19 | // WINDOWS: call void (i8*, ...) @v(i8* {{.*}}, i32 1, i32 2, i32 3, i64 0) |
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| 20 | // 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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| 21 | // LINUX: define void @f(i8* %f) |
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| 22 | // LINUX: call void (i8*, ...) @v(i8* {{.*}}, i32 1, i32 2, i32 3, i32 0) |
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| 23 | // 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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| 24 | |
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