| 1 | // RUN: %clangxx_asan -g %s -o %t |
| 2 | // RUN: not %run %t 1 2>&1 | FileCheck %s --check-prefix=CHECK-FGETS |
| 3 | // RUN: not %run %t 2 2>&1 | FileCheck %s --check-prefix=CHECK-FPUTS |
| 4 | // RUN: not %run %t 3 2>&1 | FileCheck %s --check-prefix=CHECK-PUTS |
| 5 | |
| 6 | #include <assert.h> |
| 7 | #include <stdio.h> |
| 8 | #include <stdlib.h> |
| 9 | #include <string.h> |
| 10 | |
| 11 | int test_fgets(const char *testfile) { |
| 12 | char buf[2]; |
| 13 | FILE *fp = fopen(filename: testfile, modes: "r" ); |
| 14 | assert(fp); |
| 15 | fgets(s: buf, n: sizeof(buf) + 1, stream: fp); // BOOM |
| 16 | fclose(stream: fp); |
| 17 | return 0; |
| 18 | } |
| 19 | |
| 20 | int test_fputs() { |
| 21 | char buf[1] = {'x'}; // Note: not nul-terminated |
| 22 | FILE *fp = fopen(filename: "/dev/null" , modes: "w" ); |
| 23 | assert(fp); |
| 24 | fputs(s: buf, stream: fp); // BOOM |
| 25 | fclose(stream: fp); |
| 26 | return 0; |
| 27 | } |
| 28 | |
| 29 | int test_puts() { |
| 30 | char *p = strdup(s: "x" ); |
| 31 | free(ptr: p); |
| 32 | puts(s: p); // BOOM |
| 33 | return 0; |
| 34 | } |
| 35 | |
| 36 | int main(int argc, char *argv[]) { |
| 37 | assert(argc >= 2); |
| 38 | int testno = argv[1][0] - '0'; |
| 39 | if (testno == 1) { |
| 40 | return test_fgets(testfile: argv[0]); |
| 41 | } |
| 42 | if (testno == 2) |
| 43 | return test_fputs(); |
| 44 | if (testno == 3) |
| 45 | return test_puts(); |
| 46 | return 1; |
| 47 | } |
| 48 | |
| 49 | // CHECK-FGETS: {{.*ERROR: AddressSanitizer: stack-buffer-overflow}} |
| 50 | // CHECK-FGETS: #{{.*}} in {{(wrap_|__interceptor_)?}}fgets |
| 51 | // CHECK-FPUTS: {{.*ERROR: AddressSanitizer: stack-buffer-overflow}} |
| 52 | // CHECK-FPUTS: #{{.*}} in {{(wrap_|__interceptor_)?}}fputs |
| 53 | // CHECK-PUTS: {{.*ERROR: AddressSanitizer: heap-use-after-free}} |
| 54 | // CHECK-PUTS: #{{.*}} in {{(wrap_|__interceptor_)?}}puts |
| 55 | |