compiler-rt/test/asan/TestCases/Darwin/dump_registers.cpp

   1 // Check that ASan dumps the CPU registers on a SIGSEGV.
   2
   3 // RUN: %clangxx_asan %s -o %t
   4 // RUN: not %run %t 2>&1 | FileCheck %s
   5
   6 #include <assert.h>
   7 #include <stdio.h>
   8 #include <sys/mman.h>
   9
  10 int main() {
  11   fprintf(stderr, "Hello\n");
  12   char *ptr;
  13
  14   ptr = (char *)mmap(NULL, 0x10000, PROT_NONE, MAP_ANON | MAP_PRIVATE, -1, 0);
  15   assert(ptr && "failed to mmap");
  16
  17   fprintf(stderr, sizeof(uintptr_t) == 8 ? "p = 0x%016lx\n" : "p = 0x%08lx\n", (uintptr_t)ptr);
  18   // CHECK: p = [[ADDR:0x[0-9]+]]
  19
  20   char c = *ptr;  // BOOM
  21   // CHECK: ERROR: AddressSanitizer: {{SEGV|BUS}}
  22   // CHECK: Register values:
  23   // CHECK: [[ADDR]]
  24   fprintf(stderr, "World\n");
  25   return c;
  26 }