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add a simple canary for temporal debugging

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YAMAMOTO Takashi 2024-04-22 12:46:59 +09:00
parent 671d6cc523
commit ee0ff4f370
1 changed files with 11 additions and 0 deletions
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11
samples/native-stack-overflow/src/main.c
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@ -101,6 +101,12 @@ main(int argc, char **argv)
const char *exception = NULL; const char *exception = NULL;
nest = 0; nest = 0;
uint32_t *x = os_thread_get_stack_boundary();
x[-1] = 0xaabbccdd;
x[-2] = 0x12345678;
assert(x[-1] == 0xaabbccdd);
assert(x[-2] == 0x12345678);
module_inst = wasm_runtime_instantiate(module, stack_size, heap_size, module_inst = wasm_runtime_instantiate(module, stack_size, heap_size,
error_buf, sizeof(error_buf)); error_buf, sizeof(error_buf));
if (!module_inst) { if (!module_inst) {
@ -134,6 +140,11 @@ main(int argc, char **argv)
} }
failed = false; failed = false;
fail2: fail2:
if (x[-1] != 0xaabbccdd) {
printf("stack size %u\n", stack);
}
assert(x[-1] == 0xaabbccdd);
assert(x[-2] == 0x12345678);
/* /*
* note: non-zero "nest" here demonstrates resource leak on longjmp * note: non-zero "nest" here demonstrates resource leak on longjmp
* from signal handler. * from signal handler.