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[C99] Claim conformance to digraphs/iso646
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// RUN: %clang_cc1 -verify -ffreestanding %s | ||
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/* WG14 ???: yes | ||
* restricted character set support via digraphs and <iso646.h> | ||
* | ||
* NB: I cannot find a definitive document number associated with the feature, | ||
* which was pulled from the editor's report in the C99 front matter. However, | ||
* based on discussion in the C99 rationale document, I believe this is | ||
* referring to features added by AMD1 to support ISO 646 and digraphs. | ||
*/ | ||
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// Validate that we provide iso646.h in freestanding mode. | ||
#include <iso646.h> | ||
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// Validate that we define all the expected macros and their expected | ||
// expansions (when suitable for a constant expression) as well. | ||
#ifndef and | ||
#error "missing and" | ||
#else | ||
_Static_assert((1 and 1) == (1 && 1), ""); | ||
#endif | ||
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#ifndef and_eq | ||
#error "missing and_eq" | ||
#endif | ||
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#ifndef bitand | ||
#error "missing bitand" | ||
#else | ||
_Static_assert((1 bitand 3) == (1 & 3), ""); | ||
#endif | ||
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#ifndef bitor | ||
#error "missing bitor" | ||
#else | ||
_Static_assert((1 bitor 2) == (1 | 2), ""); | ||
#endif | ||
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#ifndef compl | ||
#error "missing compl" | ||
#else | ||
_Static_assert((compl 0) == (~0), ""); | ||
#endif | ||
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#ifndef not | ||
#error "missing not" | ||
#else | ||
_Static_assert((not 12) == (!12), ""); | ||
#endif | ||
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#ifndef not_eq | ||
#error "missing not_eq" | ||
#else | ||
_Static_assert((0 not_eq 12) == (0 != 12), ""); | ||
#endif | ||
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#ifndef or | ||
#error "missing or" | ||
#else | ||
// This intentionally diagnoses use of '||' only, because the user likely did | ||
// not confuse the operator when using 'or' instead. | ||
_Static_assert((0 or 12) == (0 || 12), ""); // expected-warning {{use of logical '||' with constant operand}} \ | ||
expected-note {{use '|' for a bitwise operation}} | ||
#endif | ||
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#ifndef or_eq | ||
#error "missing or_eq" | ||
#endif | ||
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#ifndef xor | ||
#error "missing xor" | ||
#else | ||
_Static_assert((1 xor 3) == (1 ^ 3), ""); | ||
#endif | ||
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#ifndef xor_eq | ||
#error "missing xor_eq" | ||
#endif | ||
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// Validate that digraphs behave the same as their expected counterparts. The | ||
// definition should match the declaration in every way except spelling. | ||
#define DI_NAME(f, b) f %:%: b | ||
#define STD_NAME(f, b) f ## b | ||
void DI_NAME(foo, bar)(int (*array)<: 0 :>); | ||
void STD_NAME(foo, bar)(int (*array)[0]) {} | ||
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#define DI_STR(f) %:f | ||
#define STD_STR(f) #f | ||
_Static_assert(__builtin_strcmp(DI_STR(testing), STD_STR(testing)) == 0, ""); | ||
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