third_party/android_crazy_linker/src/tests/foo_with_relro.cpp

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include <android/log.h>
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8
   9 // This is a large table that contains pointers to ensure that it
  10 // gets put inside the RELRO section.
  11 #define LINE "some example string",
  12 #define LINE8 LINE LINE LINE LINE LINE LINE LINE LINE
  13 #define LINE64 LINE8 LINE8 LINE8 LINE8 LINE8 LINE8 LINE8 LINE8
  14 #define LINE512 LINE64 LINE64 LINE64 LINE64 LINE64 LINE64 LINE64 LINE64
  15 #define LINE4096 LINE512 LINE512 LINE512 LINE512 LINE512 LINE512 LINE512 LINE512
  16
  17 const char* const kStrings[] = {LINE4096 LINE4096 LINE4096 LINE4096};
  18
  19 extern "C" void Foo() {
  20   printf("%s: Entering\n", __FUNCTION__);
  21   for (size_t n = 0; n < sizeof(kStrings) / sizeof(kStrings[0]); ++n) {
  22     const char* ptr = kStrings[n];
  23     if (strcmp(ptr, "some example string")) {
  24       printf("%s: Bad string at offset=%zu\n", __FUNCTION__, n);
  25       exit(1);
  26     }
  27   }
  28   printf("%s: Exiting\n", __FUNCTION__);
  29 }