| /* { 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; |
| } |
