src/compiler-rt/test/asan/TestCases/Linux/leak_check_segv.cc

   1 // Test that SIGSEGV during leak checking does not crash the process.
   2 // RUN: %clangxx_asan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s
   3 // REQUIRES: leak-detection
   4 #include <stdlib.h>
   5 #include <stdio.h>
   6 #include <sys/mman.h>
   7 #include <sanitizer/lsan_interface.h>
   8
   9 char data[10 * 1024 * 1024];
  10
  11 int main() {
  12   void *p = malloc(10 * 1024 * 1024);
  13   // surprise-surprise!
  14   mprotect((void*)(((unsigned long)p + 4095) & ~4095), 16 * 1024, PROT_NONE);
  15   mprotect((void*)(((unsigned long)data + 4095) & ~4095), 16 * 1024, PROT_NONE);
  16   __lsan_do_leak_check();
  17   fprintf(stderr, "DONE\n");
  18 }
  19
  20 // CHECK: Tracer caught signal 11
  21 // CHECK: LeakSanitizer has encountered a fatal error
  22 // CHECK: HINT: For debugging, try setting {{.*}} LSAN_OPTIONS
  23 // CHECK-NOT: DONE