compiler-rt/test/tsan/debug_locate.cpp

   1 // RUN: %clangxx_tsan -O0 %s -o %t
   2 // RUN: %run %t 2>&1 | FileCheck %s
   3
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6
   7 extern "C" const char *
   8 __tsan_locate_address(void *addr, char *name, size_t name_size,
   9                       void **region_address_ptr, size_t *region_size_ptr);
  10
  11 long global_var;
  12
  13 int main() {
  14   long stack_var;
  15   void *heap_var = malloc(10);
  16
  17   fprintf(stderr, "stack_var = %p\n", &stack_var);
  18   fprintf(stderr, "global_var = %p\n", &global_var);
  19   fprintf(stderr, "heap_var = %p\n", heap_var);
  20   // CHECK: stack_var = [[STACK_VAR:0x[0-9a-f]+]]
  21   // CHECK: global_var = [[GLOBAL_VAR:0x[0-9a-f]+]]
  22   // CHECK: heap_var = [[HEAP_VAR:0x[0-9a-f]+]]
  23
  24   const char *type;
  25   char name[128];
  26   void *start;
  27   size_t size;
  28   type = __tsan_locate_address(&stack_var, name, 128, &start, &size);
  29   fprintf(stderr, "type: %s\n", type);
  30   // CHECK: type: stack
  31
  32   type = __tsan_locate_address(&global_var, name, 128, &start, &size);
  33   fprintf(stderr, "type: %s, name = %s, start = %p, size = %zu\n", type, name,
  34           start, size);
  35   // CHECK: type: global, name = global_var, start = [[GLOBAL_VAR]], size = {{8|0}}
  36
  37   type = __tsan_locate_address(heap_var, name, 128, &start, &size);
  38   fprintf(stderr, "type: %s, start = %p, size = %zu\n", type, start, size);
  39   // CHECK: type: heap, start = [[HEAP_VAR]], size = 10
  40
  41   free(heap_var);
  42   return 0;
  43 }