compiler-rt/test/gwp_asan/backtrace.c

   1 // REQUIRES: gwp_asan
   2 // RUN: %clang_gwp_asan -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer %s -g -o %t
   3 // RUN: %expect_crash %t 2>&1 | FileCheck %s
   4
   5 // Ensure we don't crash when using the unwinder when frame pointers are
   6 // disabled.
   7 // RUN: %clang_gwp_asan -fomit-frame-pointer -momit-leaf-frame-pointer %s -g -o %t
   8 // RUN: %expect_crash %t
   9
  10 // Incomplete backtrace on Armv7
  11 // UNSUPPORTED: armhf-linux
  12
  13 #include <stdlib.h>
  14
  15 __attribute__((noinline)) void *allocate_mem() { return malloc(1); }
  16
  17 __attribute__((noinline)) void free_mem(void *ptr) { free(ptr); }
  18
  19 __attribute__((noinline)) void touch_mem(void *ptr) {
  20   volatile char sink = *((volatile char *)ptr);
  21 }
  22
  23 // CHECK: Use After Free
  24 // CHECK: touch_mem
  25 // CHECK: was deallocated
  26 // CHECK: free_mem
  27 // CHECK: was allocated
  28 // CHECK: allocate_mem
  29
  30 int main() {
  31   for (unsigned i = 0; i < 0x10000; ++i) {
  32     void *ptr = allocate_mem();
  33     free_mem(ptr);
  34     touch_mem(ptr);
  35   }
  36   return 0;
  37 }