compiler-rt/test/tsan/ignore_lib4.cpp

   1 // RUN: rm -rf %t-dir
   2 // RUN: mkdir %t-dir
   3
   4 // RUN: %clangxx_tsan -O1 %s -DLIB -fPIC -shared -o %t-dir/libignore_lib4.so
   5 // RUN: %clangxx_tsan -O1 %s %link_libcxx_tsan -o %t-dir/executable
   6 // RUN: echo "called_from_lib:libignore_lib4.so" > %t-dir/executable.supp
   7 // RUN: %env_tsan_opts=suppressions='%t-dir/executable.supp' %run %t-dir/executable 2>&1 | FileCheck %s
   8
   9 // powerpc64 big endian bots failed with "FileCheck error: '-' is empty" due
  10 // to a segmentation fault.
  11 // UNSUPPORTED: target=powerpc64-unknown-linux-gnu{{.*}}
  12 // aarch64 bots failed with "called_from_lib suppression 'libignore_lib4.so'
  13 //                           is matched against 2 libraries".
  14 // UNSUPPORTED: target=aarch64{{.*}}
  15
  16 // Test longjmp in ignored lib.
  17 // It used to crash since we jumped out of ScopedInterceptor scope.
  18
  19 #include "test.h"
  20 #include <setjmp.h>
  21 #include <string.h>
  22 #include <errno.h>
  23 #include <libgen.h>
  24 #include <string>
  25
  26 #ifdef LIB
  27
  28 extern "C" void myfunc() {
  29   for (int i = 0; i < (1 << 20); i++) {
  30     jmp_buf env;
  31     if (!setjmp(env))
  32       longjmp(env, 1);
  33   }
  34 }
  35
  36 #else
  37
  38 int main(int argc, char **argv) {
  39   std::string lib = std::string(dirname(argv[0])) + "/libignore_lib4.so";
  40   void *h = dlopen(lib.c_str(), RTLD_GLOBAL | RTLD_NOW);
  41   void (*func)() = (void(*)())dlsym(h, "myfunc");
  42   func();
  43   fprintf(stderr, "DONE\n");
  44   return 0;
  45 }
  46
  47 #endif
  48
  49 // CHECK: DONE