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// Regression test for
// https://code.google.com/p/address-sanitizer/issues/detail?id=178
// Assume we're on Darwin and try to pass -U to the linker. If this flag is
// unsupported, don't use it.
// RUN: %clangxx_asan -O0 -DSHARED_LIB %s \
// RUN: -fPIC -shared -o %t-so.so -Wl,-U,_inc_global || \
// RUN: %clangxx_asan -O0 -DSHARED_LIB %s \
// RUN: -fPIC -shared -o %t-so.so
// If the linker doesn't support --export-dynamic (which is ELF-specific),
// try to link without that option.
// FIXME: find a better solution.
// RUN: %clangxx_asan -O0 %s -pthread %libdl -o %t -Wl,--export-dynamic || \
// RUN: %clangxx_asan -O0 %s -pthread %libdl -o %t
// RUN: ASAN_OPTIONS=strict_init_order=true %run %t 2>&1 | FileCheck %s
#if !defined(SHARED_LIB)
#include <dlfcn.h>
#include <pthread.h>
#include <stdio.h>
#include <unistd.h>
#include <string>
using std::string;
int foo() {
return 42;
}
int global = foo();
__attribute__((visibility("default")))
extern "C"
void inc_global() {
global++;
}
void *global_poller(void *arg) {
while (true) {
if (global != 42)
break;
usleep(100);
}
return 0;
}
int main(int argc, char *argv[]) {
pthread_t p;
pthread_create(&p, 0, global_poller, 0);
string path = string(argv[0]) + "-so.so";
if (0 == dlopen(path.c_str(), RTLD_NOW)) {
fprintf(stderr, "dlerror: %s\n", dlerror());
return 1;
}
pthread_join(p, 0);
printf("PASSED\n");
// CHECK: PASSED
return 0;
}
#else // SHARED_LIB
#include <stdio.h>
#include <unistd.h>
extern "C" void inc_global();
int slow_init() {
sleep(1);
inc_global();
return 42;
}
int slowly_init_glob = slow_init();
#endif // SHARED_LIB
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