| 1 | /* RUN: %clang_msan -g %s -o %t |
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| 2 | RUN: %clang_msan -g %s -DBUILD_SO -fPIC -o %t-so.so -shared |
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| 3 | RUN: %run %t 2>&1 | FileCheck %s |
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| 4 | |
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| 5 | REQUIRES: glibc{{.*}} |
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| 6 | */ |
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| 7 | |
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| 8 | #define _GNU_SOURCE |
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| 9 | |
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| 10 | #ifndef BUILD_SO |
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| 11 | #include <assert.h> |
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| 12 | #include <dlfcn.h> |
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| 13 | #include <stdio.h> |
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| 14 | #include <stdlib.h> |
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| 15 | |
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| 16 | typedef volatile long *(* get_t)(); |
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| 17 | get_t GetTls; |
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| 18 | |
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| 19 | int main(int argc, char *argv[]) { |
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| 20 | char path[4096]; |
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| 21 | snprintf(s: path, maxlen: sizeof(path), format: "%s-so.so" , argv[0]); |
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| 22 | int i; |
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| 23 | |
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| 24 | void *handle = dlopen(file: path, RTLD_LAZY); |
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| 25 | if (!handle) fprintf(stderr, format: "%s\n" , dlerror()); |
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| 26 | assert(handle != 0); |
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| 27 | GetTls = (get_t)dlsym(handle: handle, name: "GetTls" ); |
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| 28 | assert(dlerror() == 0); |
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| 29 | |
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| 30 | Dl_info info; |
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| 31 | int ret = dladdr(address: GetTls, info: &info); |
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| 32 | assert (ret != 0); |
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| 33 | printf (format: "fname: %s\n" , info.dli_fname); |
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| 34 | printf (format: "fbase: %p\n" , info.dli_fbase); |
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| 35 | printf (format: "sname: %s\n" , info.dli_sname); |
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| 36 | printf (format: "saddr: %p\n" , info.dli_saddr); |
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| 37 | |
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| 38 | // CHECK: sname: GetTls |
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| 39 | |
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| 40 | return 0; |
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| 41 | } |
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| 42 | #else // BUILD_SO |
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| 43 | long var; |
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| 44 | long *GetTls() { |
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| 45 | return &var; |
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| 46 | } |
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| 47 | #endif |
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| 48 | |
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