| 1 | // RUN: %clang_cc1 -triple x86_64-apple-darwin -isystem %S -Wdouble-promotion -fsyntax-only %s 2>&1 | FileCheck -allow-empty %s |
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| 2 | // CHECK: warning: |
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| 3 | // CHECK: expanded from macro 'ISNAN' |
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| 4 | // CHECK: expanded from macro 'isnan' |
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| 5 | |
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| 6 | #include <warn-in-system-macro-def.c.inc> |
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| 7 | |
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| 8 | #define isnan(x) \ |
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| 9 | (sizeof (x) == sizeof (float) \ |
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| 10 | ? __isnanf (x) \ |
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| 11 | : sizeof (x) == sizeof (double) \ |
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| 12 | ? __isnan (x) : __isnanl (x)) |
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| 13 | |
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| 14 | int main(void) |
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| 15 | { |
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| 16 | double foo = 1.0; |
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| 17 | |
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| 18 | if (ISNAN(foo)) |
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| 19 | return 1; |
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| 20 | return 0; |
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| 21 | } |
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| 22 | |
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