gcc/testsuite/c-c++-common/hwasan/hwasan-thread-clears-stack.c

/* { dg-do run } */
/* { dg-require-effective-target hwaddress_exec } */
/* { dg-shouldfail "hwasan" } */
/* { dg-additional-options "-lpthread" } */

/* This checks the interceptor ABI pthread hooks.
   The stack of the thread that is finishing must be cleared of shadow tags
   when that thread exits.  */

#include <pthread.h>

#ifdef __cplusplus
extern "C" {
#endif
extern int printf (char const *, ...);
#ifdef __cplusplus
}
#endif
typedef __UINTPTR_TYPE__ uintptr_t;
typedef __UINT64_TYPE__ uint64_t;

__attribute__ ((noinline))
void * Ident (void * argument)
{
	return argument;
}

void *
pthread_stack_is_cleared (void *argument)
{
   (void)argument;
   int internal_array[16] = {0};
   return Ident((void*)internal_array);
}

int
main (int argc, char **argv)
{
    int argument[100] = {0};
    argument[1] = 10;
    pthread_t thread_index;
    pthread_create (&thread_index, NULL, pthread_stack_is_cleared, (void*)argument);

    void *retval;
    pthread_join (thread_index, &retval);

    printf ("(should fail): ");
    printf ("value left in stack is: %d\n", ((int *)retval)[0]);

    return (uintptr_t)retval;
}

/* { dg-output "HWAddressSanitizer: tag-mismatch on address 0x\[0-9a-f\]*.*" } */
/* { dg-output "READ of size 4 at 0x\[0-9a-f\]* tags: \[\[:xdigit:\]\]\[\[:xdigit:\]\]/00 \\(ptr/mem\\) in thread T0.*" } */
/* { dg-output "HWAddressSanitizer can not describe address in more detail\..*" } */
/* { dg-output "SUMMARY: HWAddressSanitizer: tag-mismatch \[^\n\]*.*" } */