53 lines
1.8 KiB
C++
53 lines
1.8 KiB
C++
// RUN: %clangxx_msan %s -o %t
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// RUN: %run %t --disable-checks 0 2>&1 | FileCheck --check-prefix=DISABLED --allow-empty %s
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// RUN: %run %t --disable-checks 1 2>&1 | FileCheck --check-prefix=DISABLED --allow-empty %s
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// RUN: %run %t --disable-checks 2 2>&1 | FileCheck --check-prefix=DISABLED --allow-empty %s
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// RUN: %run %t --disable-checks 3 2>&1 | FileCheck --check-prefix=DISABLED --allow-empty %s
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// RUN: not %run %t --reenable-checks 0 2>&1 | FileCheck --check-prefix=CASE-0 %s
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// RUN: not %run %t --reenable-checks 1 2>&1 | FileCheck --check-prefix=CASE-1 %s
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// RUN: not %run %t --reenable-checks 2 2>&1 | FileCheck --check-prefix=CASE-2 %s
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// RUN: not %run %t --reenable-checks 3 2>&1 | FileCheck --check-prefix=CASE-3 %s
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sanitizer/msan_interface.h>
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int main(int argc, char *argv[]) {
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assert(argc == 3);
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__msan_scoped_disable_interceptor_checks();
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if (strcmp(argv[1], "--reenable-checks") == 0)
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__msan_scoped_enable_interceptor_checks();
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char uninit[7];
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switch (argv[2][0]) {
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case '0': {
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char *copy = strndup(uninit, sizeof(uninit)); // BOOM
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free(copy);
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break;
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// CASE-0: Uninitialized bytes in __interceptor_strndup
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}
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case '1': {
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puts(uninit); // BOOM
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puts(uninit); // Ensure previous call did not enable interceptor checks.
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break;
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// CASE-1: Uninitialized bytes in __interceptor_puts
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}
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case '2': {
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int cmp = memcmp(uninit, uninit, sizeof(uninit)); // BOOM
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break;
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// CASE-2: Uninitialized bytes in MemcmpInterceptorCommon
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}
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case '3': {
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size_t len = strlen(uninit); // BOOM
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break;
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// CASE-3: Uninitialized bytes in __interceptor_strlen
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}
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default: assert(0);
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}
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// DISABLED-NOT: Uninitialized bytes
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return 0;
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}
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