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79c4ece75f
Allows unloading and reloading of ignored libraries. We don't attempt to reuse or free memory of unloaded library. So TSan will assert if an ignored library is reloaded 128 times. Co-authored-by: Vitaly Buka <vitalybuka@gmail.com>
52 lines
1.6 KiB
C++
52 lines
1.6 KiB
C++
// RUN: rm -rf %t-dir
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// RUN: mkdir %t-dir
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// RUN: %clangxx_tsan -O1 %s -DLIB -fPIC -fno-sanitize=thread -shared -o %t-dir/libignore_lib3.so
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// RUN: %clangxx_tsan -O1 %s %link_libcxx_tsan -o %t-dir/executable
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// RUN: %env_tsan_opts=suppressions='%s.supp':verbosity=1 %run %t-dir/executable 2>&1 | FileCheck %s
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// Tests that unloading of a library matched against called_from_lib suppression
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// is supported.
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// Some aarch64 kernels do not support non executable write pages
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// REQUIRES: stable-runtime
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#ifndef LIB
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#include <dlfcn.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <errno.h>
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#include <libgen.h>
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#include <string>
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int main(int argc, char **argv) {
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std::string lib = std::string(dirname(argv[0])) + "/libignore_lib3.so";
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void *h;
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void (*f)();
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// Try opening, closing and reopening the ignored lib.
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for (unsigned int k = 0; k < 2; k++) {
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h = dlopen(lib.c_str(), RTLD_GLOBAL | RTLD_NOW);
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if (h == 0)
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exit(printf("failed to load the library (%d)\n", errno));
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f = (void (*)())dlsym(h, "libfunc");
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if (f == 0)
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exit(printf("failed to find the func (%d)\n", errno));
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f();
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dlclose(h);
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}
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fprintf(stderr, "OK\n");
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}
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#else // #ifdef LIB
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# include "ignore_lib_lib.h"
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#endif // #ifdef LIB
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// CHECK: Matched called_from_lib suppression 'ignore_lib3.so'
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// CHECK: library '{{.*}}ignore_lib3.so' that was matched against called_from_lib suppression 'ignore_lib3.so' is unloaded
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// CHECK: Matched called_from_lib suppression 'ignore_lib3.so'
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// CHECK: library '{{.*}}ignore_lib3.so' that was matched against called_from_lib suppression 'ignore_lib3.so' is unloaded
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// CHECK: OK
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