53 lines
1.9 KiB
C++
53 lines
1.9 KiB
C++
// RUN: %clang_cc1 -std=c++11 -triple x86_64-linux-gnu -ffreestanding -verify %s
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// RUN: %clang_cc1 -std=c++11 -triple i686-pc-linux-gnu -ffreestanding -verify %s
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// RUN: %clang_cc1 -std=c++11 -triple avr-unknown-unknown -ffreestanding -verify %s
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// expected-no-diagnostics
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// Test that checks that the builtins return the same type as the stdint.h type
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// withe the same witdh. This is done by first declaring a variable of a stdint
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// type of the correct width and the redeclaring the variable with the type that
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// the builting return. If the types are different you should the an error from
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// clang of the form:
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// "redefinition of '<varname>' with a different type: '<type1>' vs '<type2>'
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// (with gcc you get an error message
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// "conflicting declaration '<type> <varname>'").
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#include <stdint.h>
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extern uint16_t bswap16;
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decltype(__builtin_bswap16(0)) bswap16 = 42;
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extern uint32_t bswap32;
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decltype(__builtin_bswap32(0)) bswap32 = 42;
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extern uint64_t bswap64;
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decltype(__builtin_bswap64(0)) bswap64 = 42;
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#ifdef __clang__
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extern uint8_t bitrev8;
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decltype(__builtin_bitreverse8(0)) bitrev8 = 42;
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extern uint16_t bitrev16;
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decltype(__builtin_bitreverse16(0)) bitrev16 = 42;
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extern uint32_t bitrev32;
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decltype(__builtin_bitreverse32(0)) bitrev32 = 42;
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extern uint64_t bitrev64;
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decltype(__builtin_bitreverse64(0)) bitrev64 = 42;
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extern uint8_t rotl8;
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decltype(__builtin_rotateleft8(0,0)) rotl8 = 42;
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extern uint16_t rotl16;
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decltype(__builtin_rotateleft16(0,0)) rotl16 = 42;
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extern uint32_t rotl32;
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decltype(__builtin_rotateleft32(0,0)) rotl32 = 42;
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extern uint64_t rotl64;
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decltype(__builtin_rotateleft64(0,0)) rotl64 = 42;
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extern uint8_t rotr8;
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decltype(__builtin_rotateright8(0,0)) rotr8 = 42;
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extern uint16_t rotr16;
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decltype(__builtin_rotateright16(0,0)) rotr16 = 42;
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extern uint32_t rotr32;
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decltype(__builtin_rotateright32(0,0)) rotr32 = 42;
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extern uint64_t rotr64;
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decltype(__builtin_rotateright64(0,0)) rotr64 = 42;
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#endif
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