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// RUN: %clang_hwasan -g %s -o %t
// RUN: not %run %t 0 2>&1 | FileCheck %s
// RUN: not %run %t -33 2>&1 | FileCheck %s
// REQUIRES: pointer-tagging
#include <assert.h>
#include <setjmp.h>
#include <stdio.h>
#include <stdlib.h>
/* Testing longjmp/setjmp should test that accesses to scopes jmp'd over are
caught. */
int __attribute__((noinline))
uses_longjmp(int **other_array, int num, jmp_buf env) {
int internal_array[100] = {0};
*other_array = &internal_array[0];
longjmp(env, num);
}
int __attribute__((noinline)) uses_setjmp(int num) {
int big_array[100];
int *other_array = NULL;
sigjmp_buf cur_env;
int temp = 0;
if ((temp = sigsetjmp(cur_env, 1)) != 0) {
assert((num == 0 && temp == 1) || (num != 0 && temp == num));
// We're testing that our longjmp interceptor untagged the previous stack.
// Hence the tag in memory should be zero.
if (other_array != NULL)
return other_array[0];
// CHECK: READ of size 4 at{{.*}}tags: {{..}}/00
return 100;
} else
return uses_longjmp(&other_array, num, cur_env);
}
int __attribute__((noinline)) main(int argc, char *argv[]) {
assert(argc == 2);
int longjmp_retval = atoi(argv[1]);
uses_setjmp(longjmp_retval);
return 0;
}
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