48 lines · c
1/* RUN: %clang_msan -g %s -o %t2 RUN: %clang_msan -g %s -DBUILD_SO -fPIC -o %t-so.so -shared3 RUN: %run %t 2>&1 | FileCheck %s4 5 REQUIRES: glibc{{.*}}6*/7 8#define _GNU_SOURCE9 10#ifndef BUILD_SO11#include <assert.h>12#include <dlfcn.h>13#include <stdio.h>14#include <stdlib.h>15 16typedef volatile long *(* get_t)();17get_t GetTls;18 19int main(int argc, char *argv[]) {20 char path[4096];21 snprintf(path, sizeof(path), "%s-so.so", argv[0]);22 int i;23 24 void *handle = dlopen(path, RTLD_LAZY);25 if (!handle) fprintf(stderr, "%s\n", dlerror());26 assert(handle != 0);27 GetTls = (get_t)dlsym(handle, "GetTls");28 assert(dlerror() == 0);29 30 Dl_info info;31 int ret = dladdr(GetTls, &info);32 assert (ret != 0);33 printf ("fname: %s\n", info.dli_fname);34 printf ("fbase: %p\n", info.dli_fbase);35 printf ("sname: %s\n", info.dli_sname);36 printf ("saddr: %p\n", info.dli_saddr);37 38 // CHECK: sname: GetTls39 40 return 0;41}42#else // BUILD_SO43long var;44long *GetTls() {45 return &var;46}47#endif48