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