llvm-project

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// 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' %deflake %run %t-dir/executable | FileCheck %s
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// Tests that unloading of a library matched against called_from_lib suppression
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// causes program crash (this is not 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 = dlopen(lib.c_str(), RTLD_GLOBAL | RTLD_NOW);
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  dlclose(h);
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  fprintf(stderr, "OK\n");
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}
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#else  // #ifdef LIB
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extern "C" void libfunc() {
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}
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#endif  // #ifdef LIB
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// CHECK: ThreadSanitizer: library {{.*}} that was matched against called_from_lib suppression 'ignore_lib3.so' is unloaded
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// CHECK-NOT: OK
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