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// RUN: %clang -g %s -o %t
// RUN: %clang -g %s -DBUILD_SO -fPIC -o %t-so.so -shared
// RUN: %run %t 2>&1 | FileCheck %s
// REQUIRES: glibc
// `__tls_get_addr` is somehow not invoked.
// XFAIL: i386-linux
// These don't intercept __tls_get_addr.
// XFAIL: lsan,hwasan,ubsan
// FIXME: Fails for unknown reasons.
// UNSUPPORTED: powerpc64le-target-arch
#ifndef BUILD_SO
# include <assert.h>
# include <dlfcn.h>
# include <pthread.h>
# include <stdio.h>
# include <stdlib.h>
// CHECK-COUNT-2: __sanitizer_get_dtls_size:
size_t __sanitizer_get_dtls_size(const void *ptr)
__attribute__((disable_sanitizer_instrumentation)) {
fprintf(stderr, "__sanitizer_get_dtls_size: %p\n", ptr);
return 0;
}
typedef long *(*get_t)();
get_t GetTls;
void *Thread(void *unused) { return GetTls(); }
int main(int argc, char *argv[]) {
char path[4096];
snprintf(path, sizeof(path), "%s-so.so", argv[0]);
int i;
void *handle = dlopen(path, RTLD_LAZY);
if (!handle)
fprintf(stderr, "%s\n", dlerror());
assert(handle != 0);
GetTls = (get_t)dlsym(handle, "GetTls");
assert(dlerror() == 0);
pthread_t t;
pthread_create(&t, 0, Thread, 0);
pthread_join(t, 0);
pthread_create(&t, 0, Thread, 0);
pthread_join(t, 0);
return 0;
}
#else // BUILD_SO
__thread long huge_thread_local_array[1 << 17];
long *GetTls() { return &huge_thread_local_array[0]; }
#endif
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