60 lines · c
1// RUN: %clang -g %s -o %t2// RUN: %clang -g %s -DBUILD_SO -fPIC -o %t-so.so -shared3// RUN: %run %t 2>&1 | FileCheck %s4 5// REQUIRES: glibc6 7// `__tls_get_addr` is somehow not invoked.8// XFAIL: i386-linux9 10// These don't intercept __tls_get_addr.11// XFAIL: lsan,hwasan,ubsan12 13// FIXME: Fails for unknown reasons.14// UNSUPPORTED: powerpc64le-target-arch15 16// Fails because AArch64 uses TLSDESC instead of __tls_get_addr.17// UNSUPPORTED: aarch64-target-arch18 19#ifndef BUILD_SO20# include <assert.h>21# include <dlfcn.h>22# include <pthread.h>23# include <stdio.h>24# include <stdlib.h>25 26// CHECK-COUNT-2: __sanitizer_get_dtls_size:27size_t __sanitizer_get_dtls_size(const void *ptr)28 __attribute__((disable_sanitizer_instrumentation)) {29 fprintf(stderr, "__sanitizer_get_dtls_size: %p\n", ptr);30 return 0;31}32 33typedef long *(*get_t)();34get_t GetTls;35void *Thread(void *unused) { return GetTls(); }36 37int main(int argc, char *argv[]) {38 char path[4096];39 snprintf(path, sizeof(path), "%s-so.so", argv[0]);40 int i;41 42 void *handle = dlopen(path, RTLD_LAZY);43 if (!handle)44 fprintf(stderr, "%s\n", dlerror());45 assert(handle != 0);46 GetTls = (get_t)dlsym(handle, "GetTls");47 assert(dlerror() == 0);48 49 pthread_t t;50 pthread_create(&t, 0, Thread, 0);51 pthread_join(t, 0);52 pthread_create(&t, 0, Thread, 0);53 pthread_join(t, 0);54 return 0;55}56#else // BUILD_SO57__thread long huge_thread_local_array[1 << 17];58long *GetTls() { return &huge_thread_local_array[0]; }59#endif60