compiler-rt/test/tsan/ignore_lib1.cpp

   1 // RUN: rm -rf %t-dir
   2 // RUN: mkdir %t-dir
   3
   4 // RUN: %clangxx_tsan -O1 -fno-builtin %s -DLIB -fPIC -fno-sanitize=thread -shared -o %t-dir/libignore_lib1.so
   5 // RUN: %clangxx_tsan -O1 %s %link_libcxx_tsan -o %t-dir/executable
   6 // RUN: echo running w/o suppressions:
   7 // RUN: %deflake %run %t-dir/executable | FileCheck %s --check-prefix=CHECK-NOSUPP
   8 // RUN: echo running with suppressions:
   9 // RUN: %env_tsan_opts=suppressions='%s.supp' %run %t-dir/executable 2>&1 | FileCheck %s --check-prefix=CHECK-WITHSUPP
  10
  11 // Tests that interceptors coming from a dynamically loaded library specified
  12 // in called_from_lib suppression are ignored.
  13
  14 // REQUIRES: stable-runtime
  15 // UNSUPPORTED: target=powerpc64le{{.*}}
  16 // FIXME: This test regularly fails on powerpc64 LE possibly starting with
  17 // r279664.  Re-enable the test once the problem(s) have been fixed.
  18
  19 #ifndef LIB
  20
  21 #include <dlfcn.h>
  22 #include <stdlib.h>
  23 #include <stdio.h>
  24 #include <errno.h>
  25 #include <libgen.h>
  26 #include <string>
  27
  28 int main(int argc, char **argv) {
  29   std::string lib = std::string(dirname(argv[0])) + "/libignore_lib1.so";
  30   void *h = dlopen(lib.c_str(), RTLD_GLOBAL | RTLD_NOW);
  31   if (h == 0)
  32     exit(printf("failed to load the library (%d)\n", errno));
  33   void (*f)() = (void(*)())dlsym(h, "libfunc");
  34   if (f == 0)
  35     exit(printf("failed to find the func (%d)\n", errno));
  36   f();
  37 }
  38
  39 #else  // #ifdef LIB
  40
  41 #include "ignore_lib_lib.h"
  42
  43 #endif  // #ifdef LIB
  44
  45 // CHECK-NOSUPP: WARNING: ThreadSanitizer: data race
  46 // CHECK-NOSUPP: OK
  47
  48 // CHECK-WITHSUPP-NOT: WARNING: ThreadSanitizer: data race
  49 // CHECK-WITHSUPP: OK
  50