compiler-rt/test/lsan/TestCases/do_leak_check_override.cpp

   1 // Test for __lsan_do_leak_check(). We test it by making the leak check run
   2 // before global destructors, which also tests compatibility with HeapChecker's
   3 // "normal" mode (LSan runs in "strict" mode by default).
   4 // RUN: %clangxx_lsan %s -o %t
   5 // RUN: %env_lsan_opts=use_stacks=0:use_registers=0 not %run %t 2>&1 | FileCheck --check-prefix=CHECK-strict %s
   6 // RUN: %env_lsan_opts=use_stacks=0:use_registers=0 not %run %t foo 2>&1 | FileCheck --check-prefix=CHECK-normal %s
   7
   8 // Investigate why LeakyGlobal leak does show
   9 // UNSUPPORTED: arm-linux || armhf-linux
  10
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13 #include <sanitizer/lsan_interface.h>
  14
  15 struct LeakyGlobal {
  16   LeakyGlobal() {
  17     p = malloc(1337);
  18   }
  19   ~LeakyGlobal() {
  20     p = 0;
  21   }
  22   void *p;
  23 };
  24
  25 LeakyGlobal leaky_global;
  26
  27 int main(int argc, char *argv[]) {
  28   // Register leak check to run before global destructors.
  29   if (argc > 1)
  30     atexit(&__lsan_do_leak_check);
  31   void *p = malloc(666);
  32   printf("Test alloc: %p\n", p);
  33   printf("Test alloc in leaky global: %p\n", leaky_global.p);
  34   return 0;
  35 }
  36
  37 // CHECK-strict: SUMMARY: {{(Leak|Address)}}Sanitizer: 2003 byte(s) leaked in 2 allocation(s)
  38 // CHECK-normal: SUMMARY: {{(Leak|Address)}}Sanitizer: 666 byte(s) leaked in 1 allocation(s)