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// RUN: rm -rf %t-dir
// RUN: mkdir %t-dir
// RUN: %clangxx_tsan -O1 %s -DLIB -fPIC -fno-sanitize=thread -shared -o %t-dir/libignore_lib.so
// RUN: %clangxx_tsan -O1 %s %link_libcxx_tsan -o %t-dir/executable
// RUN: %env_tsan_opts=suppressions='%s.supp' %run %t-dir/executable 2>&1 | FileCheck %s
// Copied from ignore_lib5.cpp:
// REQUIRES: stable-runtime
// UNSUPPORTED: target=powerpc64le{{.*}}
// UNSUPPORTED: target={{.*netbsd.*}}
// Test that pthread_detach works in libraries ignored by called_from_lib.
// For more context see:
// https://groups.google.com/forum/#!topic/thread-sanitizer/ecH2P0QUqPs
#include "test.h"
#include <dlfcn.h>
#include <errno.h>
#include <libgen.h>
#include <stdio.h>
#include <stdlib.h>
#include <string>
#include <sys/mman.h>
#ifndef LIB
void *thr(void *arg) {
*(volatile long long *)arg = 1;
return 0;
}
int main(int argc, char **argv) {
std::string lib = std::string(dirname(argv[0])) + "/libignore_lib.so";
void *h = dlopen(lib.c_str(), RTLD_GLOBAL | RTLD_NOW);
if (h == 0)
exit(printf("failed to load the library (%d)\n", errno));
void (*libfunc)() = (void (*)())dlsym(h, "libfunc");
if (libfunc == 0)
exit(printf("failed to find the func (%d)\n", errno));
libfunc();
const int kThreads = 10;
pthread_t t[kThreads];
volatile long long data[kThreads];
for (int i = 0; i < kThreads; i++)
pthread_create(&t[i], 0, thr, (void *)&data[i]);
for (int i = 0; i < kThreads; i++) {
pthread_join(t[i], 0);
data[i] = 2;
}
fprintf(stderr, "DONE\n");
}
// CHECK-NOT: WARNING: ThreadSanitizer:
// CHECK: DONE
// CHECK-NOT: WARNING: ThreadSanitizer:
#else // #ifdef LIB
void *thr(void *p) {
sleep(1);
pthread_detach(pthread_self());
return 0;
}
extern "C" void libfunc() {
const int kThreads = 10;
pthread_t t[kThreads];
for (int i = 0; i < kThreads; i++)
pthread_create(&t[i], 0, thr, 0);
sleep(2);
}
#endif // #ifdef LIB
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