1 // RUN: %clang_cc1 -std=c++11 -triple x86_64-linux-gnu -ffreestanding -verify %s 2 // RUN: %clang_cc1 -std=c++11 -triple i686-pc-linux-gnu -ffreestanding -verify %s 3 4 // expected-no-diagnostics 5 6 // Test that checks that the builtins return the same type as the stdint.h type 7 // withe the same witdh. This is done by first declaring a variable of a stdint 8 // type of the correct width and the redeclaring the variable with the type that 9 // the builting return. If the types are different you should the an error from 10 // clang of the form: 11 // "redefinition of '<varname>' with a different type: '<type1>' vs '<type2>' 12 // (with gcc you get an error message 13 // "conflicting declaration '<type> <varname>'"). 14 15 #include <stdint.h> 16 17 extern uint16_t bswap16; 18 decltype(__builtin_bswap16(0)) bswap16 = 42; 19 extern uint32_t bswap32; 20 decltype(__builtin_bswap32(0)) bswap32 = 42; 21 extern uint64_t bswap64; 22 decltype(__builtin_bswap64(0)) bswap64 = 42; 23 24 #ifdef __clang__ 25 extern uint8_t bitrev8; 26 decltype(__builtin_bitreverse8(0)) bitrev8 = 42; 27 extern uint16_t bitrev16; 28 decltype(__builtin_bitreverse16(0)) bitrev16 = 42; 29 extern uint32_t bitrev32; 30 decltype(__builtin_bitreverse32(0)) bitrev32 = 42; 31 extern uint64_t bitrev64; 32 decltype(__builtin_bitreverse64(0)) bitrev64 = 42; 33 34 extern uint8_t rotl8; 35 decltype(__builtin_rotateleft8(0,0)) rotl8 = 42; 36 extern uint16_t rotl16; 37 decltype(__builtin_rotateleft16(0,0)) rotl16 = 42; 38 extern uint32_t rotl32; 39 decltype(__builtin_rotateleft32(0,0)) rotl32 = 42; 40 extern uint64_t rotl64; 41 decltype(__builtin_rotateleft64(0,0)) rotl64 = 42; 42 43 extern uint8_t rotr8; 44 decltype(__builtin_rotateright8(0,0)) rotr8 = 42; 45 extern uint16_t rotr16; 46 decltype(__builtin_rotateright16(0,0)) rotr16 = 42; 47 extern uint32_t rotr32; 48 decltype(__builtin_rotateright32(0,0)) rotr32 = 42; 49 extern uint64_t rotr64; 50 decltype(__builtin_rotateright64(0,0)) rotr64 = 42; 51 #endif 52