compiler-rt/test/asan/TestCases/Linux/static_tls.cpp

   1 // REQUIRES: asan-64-bits
   2 // Regression test: __tls_get_addr interceptor must recognize static TLS.
   3 //
   4 // RUN: %clangxx_asan -DSHARED %s -shared -o %t-so.so -fPIC
   5 // RUN: %clangxx_asan %s -ldl -pthread -o %t %t-so.so
   6 // RUN: %env_asan_opts=verbosity=2 %run %t 2>&1 | FileCheck %s
   7
   8 // CHECK: before
   9 // CHECK: __tls_get_addr: static tls
  10 // CHECK: after
  11
  12 // XFAIL: target=aarch64{{.*}}
  13 // binutils 2.26 has a change that causes this test to fail on powerpc64.
  14 // UNSUPPORTED: target=powerpc64{{.*}}
  15
  16 /// We call __tls_get_addr early in GetTls to work around an issue for glibc<2.25,
  17 /// so we don't get a log for f().
  18 // REQUIRES: glibc-2.27
  19
  20 #ifndef SHARED
  21 #include <stdio.h>
  22
  23 unsigned *f();
  24 int main(int argc, char *argv[]) {
  25   fprintf(stderr, "before\n");
  26   f();
  27   fprintf(stderr, "after\n");
  28   return 0;
  29 }
  30 #else  // SHARED
  31 static __thread unsigned ThreadLocal;
  32 unsigned *f() {
  33   return &ThreadLocal;
  34 }
  35 #endif