a871c34e8d
D112630 ("sanitizer_common: fix up onprint.cpp test")
added O_CREAT, but we also need O_TRUNC b/c the file
may not exist, or may exist as well.
Reviewed By: melver
Differential Revision: https://reviews.llvm.org/D112788
38 lines
865 B
C++
38 lines
865 B
C++
// Checks that the __sanitizer_on_print hook gets the exact same sanitizer
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// report as what is printed to stderr.
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//
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// RUN: %clangxx %s -o %t
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// RUN: %run %t %t-onprint.txt 2>%t-stderr.txt || true
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// RUN: diff %t-onprint.txt %t-stderr.txt
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//
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// UNSUPPORTED: android
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#include <cassert>
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#include <cstdlib>
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#include <fcntl.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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int f;
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volatile void *buf;
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volatile char sink;
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__attribute__((disable_sanitizer_instrumentation)) extern "C" void
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__sanitizer_on_print(const char *str) {
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write(f, str, strlen(str));
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}
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int main(int argc, char *argv[]) {
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assert(argc >= 2);
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f = open(argv[1], O_CREAT | O_TRUNC | O_WRONLY, 0666);
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// Use-after-free to trigger ASan/TSan reports.
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void *ptr = malloc(1);
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buf = ptr;
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free(ptr);
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sink = *static_cast<char *>(ptr);
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return 0;
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}
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