52 lines · cpp
1// RUN: %clang_cc1 -std=c++11 -triple x86_64-linux-gnu -ffreestanding -verify %s2// RUN: %clang_cc1 -std=c++11 -triple i686-pc-linux-gnu -ffreestanding -verify %s3 4// expected-no-diagnostics5 6// Test that checks that the builtins return the same type as the stdint.h type7// withe the same witdh. This is done by first declaring a variable of a stdint8// type of the correct width and the redeclaring the variable with the type that9// the builting return. If the types are different you should the an error from10// clang of the form:11// "redefinition of '<varname>' with a different type: '<type1>' vs '<type2>'12// (with gcc you get an error message13// "conflicting declaration '<type> <varname>'").14 15#include <stdint.h>16 17extern uint16_t bswap16;18decltype(__builtin_bswap16(0)) bswap16 = 42;19extern uint32_t bswap32;20decltype(__builtin_bswap32(0)) bswap32 = 42;21extern uint64_t bswap64;22decltype(__builtin_bswap64(0)) bswap64 = 42;23 24#ifdef __clang__25extern uint8_t bitrev8;26decltype(__builtin_bitreverse8(0)) bitrev8 = 42;27extern uint16_t bitrev16;28decltype(__builtin_bitreverse16(0)) bitrev16 = 42;29extern uint32_t bitrev32;30decltype(__builtin_bitreverse32(0)) bitrev32 = 42;31extern uint64_t bitrev64;32decltype(__builtin_bitreverse64(0)) bitrev64 = 42;33 34extern uint8_t rotl8;35decltype(__builtin_rotateleft8(0,0)) rotl8 = 42;36extern uint16_t rotl16;37decltype(__builtin_rotateleft16(0,0)) rotl16 = 42;38extern uint32_t rotl32;39decltype(__builtin_rotateleft32(0,0)) rotl32 = 42;40extern uint64_t rotl64;41decltype(__builtin_rotateleft64(0,0)) rotl64 = 42;42 43extern uint8_t rotr8;44decltype(__builtin_rotateright8(0,0)) rotr8 = 42;45extern uint16_t rotr16;46decltype(__builtin_rotateright16(0,0)) rotr16 = 42;47extern uint32_t rotr32;48decltype(__builtin_rotateright32(0,0)) rotr32 = 42;49extern uint64_t rotr64;50decltype(__builtin_rotateright64(0,0)) rotr64 = 42;51#endif52