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Use volatile to workaround buffer overflow false positives.

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In test/integration/rallocx, full usable size is checked which may confuse
overflow detection.
This commit is contained in:
Qi Wang 2022-03-23 16:31:40 -07:00 committed by Qi Wang
parent 25517b852e
commit ed5fc14b28
1 changed files with 21 additions and 5 deletions
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26
test/integration/rallocx.c
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@ -41,7 +41,11 @@ get_large_size(size_t ind) {
} }
TEST_BEGIN(test_grow_and_shrink) { TEST_BEGIN(test_grow_and_shrink) {
void *p, *q; /*
* Use volatile to workaround buffer overflow false positives
* (-D_FORTIFY_SOURCE=3).
*/
void *volatile p, *volatile q;
size_t tsz; size_t tsz;
#define NCYCLES 3 #define NCYCLES 3
unsigned i, j; unsigned i, j;
@ -85,9 +89,13 @@ TEST_BEGIN(test_grow_and_shrink) {
TEST_END TEST_END
static bool static bool
validate_fill(const void *p, uint8_t c, size_t offset, size_t len) { validate_fill(void *p, uint8_t c, size_t offset, size_t len) {
bool ret = false; bool ret = false;
const uint8_t *buf = (const uint8_t *)p; /*
* Use volatile to workaround buffer overflow false positives
* (-D_FORTIFY_SOURCE=3).
*/
uint8_t *volatile buf = (uint8_t *)p;
size_t i; size_t i;
for (i = 0; i < len; i++) { for (i = 0; i < len; i++) {
@ -104,7 +112,11 @@ validate_fill(const void *p, uint8_t c, size_t offset, size_t len) {
} }
TEST_BEGIN(test_zero) { TEST_BEGIN(test_zero) {
void *p, *q; /*
* Use volatile to workaround buffer overflow false positives
* (-D_FORTIFY_SOURCE=3).
*/
void *volatile p, *volatile q;
size_t psz, qsz, i, j; size_t psz, qsz, i, j;
size_t start_sizes[] = {1, 3*1024, 63*1024, 4095*1024}; size_t start_sizes[] = {1, 3*1024, 63*1024, 4095*1024};
#define FILL_BYTE 0xaaU #define FILL_BYTE 0xaaU
@ -205,7 +217,11 @@ TEST_BEGIN(test_align_enum) {
TEST_END TEST_END
TEST_BEGIN(test_lg_align_and_zero) { TEST_BEGIN(test_lg_align_and_zero) {
void *p, *q; /*
* Use volatile to workaround buffer overflow false positives
* (-D_FORTIFY_SOURCE=3).
*/
void *volatile p, *volatile q;
unsigned lg_align; unsigned lg_align;
size_t sz; size_t sz;
#define MAX_LG_ALIGN 25 #define MAX_LG_ALIGN 25