| 1 | // RUN: %clangxx_asan -g %s -o %t |
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| 2 | // RUN: not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-FWRITE |
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| 3 | // RUN: not %run %t 1 2>&1 | FileCheck %s --check-prefix=CHECK-FREAD |
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| 4 | |
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| 5 | #include <stdio.h> |
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| 6 | #include <stdlib.h> |
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| 7 | |
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| 8 | int test_fread() { |
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| 9 | FILE *f = fopen(filename: "/dev/zero" , modes: "r" ); |
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| 10 | char buf[2]; |
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| 11 | fread(ptr: buf, size: sizeof(buf), n: 2, stream: f); // BOOM |
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| 12 | fclose(stream: f); |
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| 13 | return 0; |
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| 14 | } |
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| 15 | |
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| 16 | int test_fwrite() { |
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| 17 | FILE *f = fopen(filename: "/dev/null" , modes: "w" ); |
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| 18 | char buf[2]; |
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| 19 | fwrite(ptr: buf, size: sizeof(buf), n: 2, s: f); // BOOM |
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| 20 | return fclose(stream: f); |
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| 21 | } |
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| 22 | |
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| 23 | int main(int argc, char *argv[]) { |
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| 24 | if (argc > 1) |
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| 25 | test_fread(); |
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| 26 | else |
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| 27 | test_fwrite(); |
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| 28 | return 0; |
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| 29 | } |
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| 30 | |
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| 31 | // CHECK-FREAD: {{.*ERROR: AddressSanitizer: stack-buffer-overflow}} |
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| 32 | // CHECK-FREAD: #{{.*}} in {{(wrap_|__interceptor_)?}}fread |
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| 33 | // CHECK-FWRITE: {{.*ERROR: AddressSanitizer: stack-buffer-overflow}} |
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| 34 | // CHECK-FWRITE: #{{.*}} in {{(wrap_|__interceptor_)?}}fwrite |
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| 35 | |
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