diff options
Diffstat (limited to 'tests')
-rw-r--r-- | tests/alloc.c | 44 |
1 files changed, 34 insertions, 10 deletions
diff --git a/tests/alloc.c b/tests/alloc.c index 5fc934b..4aae515 100644 --- a/tests/alloc.c +++ b/tests/alloc.c @@ -10,6 +10,27 @@ #include <stdlib.h> #include <stdint.h> +struct flexible { + alignas(64) int foo[8]; + int bar[]; +}; + +/** Check varena_realloc() poisoning for a size combination. */ +static struct flexible *check_varena_realloc(struct varena *varena, struct flexible *flexy, size_t old_count, size_t new_count) { + flexy = varena_realloc(varena, flexy, old_count, new_count); + bfs_everify(flexy); + + for (size_t i = 0; i < new_count; ++i) { + if (i < old_count) { + bfs_check(flexy->bar[i] == (int)i); + } else { + flexy->bar[i] = i; + } + } + + return flexy; +} + void check_alloc(void) { // Check aligned allocation void *ptr; @@ -20,21 +41,14 @@ void check_alloc(void) { free(ptr); // Check sizeof_flex() - struct flexible { - alignas(64) int foo[8]; - int bar[]; - }; bfs_check(sizeof_flex(struct flexible, bar, 0) >= sizeof(struct flexible)); bfs_check(sizeof_flex(struct flexible, bar, 16) % alignof(struct flexible) == 0); - size_t too_many = SIZE_MAX / sizeof(int) + 1; + // volatile to suppress -Walloc-size-larger-than + volatile size_t too_many = SIZE_MAX / sizeof(int) + 1; bfs_check(sizeof_flex(struct flexible, bar, too_many) == align_floor(alignof(struct flexible), SIZE_MAX)); // Make sure we detect allocation size overflows -#if __GNUC__ && !__clang__ -# pragma GCC diagnostic ignored "-Walloc-size-larger-than=" -#endif - bfs_check(ALLOC_ARRAY(int, too_many) == NULL && errno == EOVERFLOW); bfs_check(ZALLOC_ARRAY(int, too_many) == NULL && errno == EOVERFLOW); bfs_check(ALLOC_FLEX(struct flexible, bar, too_many) == NULL && errno == EOVERFLOW); @@ -45,10 +59,20 @@ void check_alloc(void) { VARENA_INIT(&varena, struct flexible, bar); for (size_t i = 0; i < 256; ++i) { - bfs_verify(varena_alloc(&varena, i)); + bfs_everify(varena_alloc(&varena, i)); struct arena *arena = &varena.arenas[varena.narenas - 1]; bfs_check(arena->size >= sizeof_flex(struct flexible, bar, i)); } + // Check varena_realloc() (un)poisoning + struct flexible *flexy = varena_alloc(&varena, 160); + bfs_everify(flexy); + + flexy = check_varena_realloc(&varena, flexy, 0, 160); + flexy = check_varena_realloc(&varena, flexy, 160, 192); + flexy = check_varena_realloc(&varena, flexy, 192, 160); + flexy = check_varena_realloc(&varena, flexy, 160, 320); + flexy = check_varena_realloc(&varena, flexy, 320, 96); + varena_destroy(&varena); } |