src/compiler-rt/test/lsan/TestCases/use_stacks_threaded.cc

   1 // Test that stacks of non-main threads are included in the root set.
   2 // RUN: LSAN_BASE="report_objects=1:use_registers=0"
   3 // RUN: %clangxx_lsan -pthread %s -o %t
   4 // RUN: LSAN_OPTIONS=$LSAN_BASE:"use_stacks=0" not %run %t 2>&1 | FileCheck %s
   5 // RUN: LSAN_OPTIONS=$LSAN_BASE:"use_stacks=1" %run %t 2>&1
   6 // RUN: LSAN_OPTIONS="" %run %t 2>&1
   7
   8 #include <assert.h>
   9 #include <pthread.h>
  10 #include <sched.h>
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13
  14 extern "C"
  15 void *stacks_thread_func(void *arg) {
  16   int *sync = reinterpret_cast<int *>(arg);
  17   void *p = malloc(1337);
  18   fprintf(stderr, "Test alloc: %p.\n", p);
  19   fflush(stderr);
  20   __sync_fetch_and_xor(sync, 1);
  21   while (true)
  22     sched_yield();
  23 }
  24
  25 int main() {
  26   int sync = 0;
  27   pthread_t thread_id;
  28   int res = pthread_create(&thread_id, 0, stacks_thread_func, &sync);
  29   assert(res == 0);
  30   while (!__sync_fetch_and_xor(&sync, 0))
  31     sched_yield();
  32   return 0;
  33 }
  34 // CHECK: Test alloc: [[ADDR:.*]].
  35 // CHECK: LeakSanitizer: detected memory leaks
  36 // CHECK: [[ADDR]] (1337 bytes)
  37 // CHECK: SUMMARY: {{(Leak|Address)}}Sanitizer: