Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.c-torture/execute/alloca-1.c @ 111:04ced10e8804
gcc 7
author | kono |
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date | Fri, 27 Oct 2017 22:46:09 +0900 |
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/* { dg-skip-if "requires alloca" { ! alloca } { "-O0" } { "" } } */ /* Verify that alloca storage is sufficiently aligned. */ /* ??? May fail if BIGGEST_ALIGNMENT > STACK_BOUNDARY. Which, I guess can only happen on !STRICT_ALIGNMENT targets. */ typedef __SIZE_TYPE__ size_t; struct dummy { int x __attribute__((aligned)); }; #define BIGGEST_ALIGNMENT __alignof__(struct dummy) _Bool foo(void) { char *p = __builtin_alloca(32); return ((size_t)p & (BIGGEST_ALIGNMENT - 1)) == 0; } int main() { if (!foo()) abort (); return 0; }