| 1 | // If user provides his own libc functions, ASan doesn't |
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| 2 | // intercept these functions. |
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| 3 | |
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| 4 | // RUN: %clangxx_asan -O0 %s -o %t && %run %t 2>&1 | FileCheck %s |
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| 5 | // RUN: %clangxx_asan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s |
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| 6 | // RUN: %clangxx_asan -O2 %s -o %t && %run %t 2>&1 | FileCheck %s |
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| 7 | // RUN: %clangxx_asan -O3 %s -o %t && %run %t 2>&1 | FileCheck %s |
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| 8 | // XFAIL: target={{.*freebsd.*}} |
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| 9 | |
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| 10 | // On Windows, the static runtime build _will_ intercept static copies of libc |
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| 11 | // functions, making this test invalid. |
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| 12 | // In addition, defining strtol in a static build used to result in linker |
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| 13 | // errors with libucrt.lib, but this stopped happening somewhere between WinSDK |
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| 14 | // 10.0.19041.0 and 10.0.22621.0 due to some changes in its implementation. |
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| 15 | // UNSUPPORTED: win32-static-asan |
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| 16 | |
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| 17 | // On NetBSD, defining strtol in a static build results in linker errors, but |
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| 18 | // it works with the dynamic runtime. |
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| 19 | // XFAIL: target={{.*netbsd.*}} && !asan-dynamic-runtime |
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| 20 | |
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| 21 | #include <stdlib.h> |
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| 22 | #include <stdio.h> |
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| 23 | #include <string.h> |
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| 24 | |
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| 25 | extern "C" long strtol(const char *nptr, char **endptr, int base) { |
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| 26 | fprintf(stderr, format: "my_strtol_interceptor\n" ); |
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| 27 | if (endptr) |
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| 28 | *endptr = (char*)nptr + strlen(s: nptr); |
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| 29 | return 0; |
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| 30 | } |
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| 31 | |
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| 32 | int main() { |
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| 33 | char *x = (char*)malloc(size: 10 * sizeof(char)); |
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| 34 | free(ptr: x); |
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| 35 | return (int)strtol(nptr: x, endptr: 0, base: 10); |
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| 36 | // CHECK: my_strtol_interceptor |
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| 37 | // CHECK-NOT: heap-use-after-free |
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| 38 | } |
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| 39 | |
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