libcxx/test/support/set_windows_crt_report_mode.h

   1 // -*- C++ -*-
   2 //===----------------------------------------------------------------------===//
   3 //
   4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   5 // See https://llvm.org/LICENSE.txt for license information.
   6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #ifndef SUPPORT_SET_WINDOWS_CRT_REPORT_MODE_H
  11 #define SUPPORT_SET_WINDOWS_CRT_REPORT_MODE_H
  12
  13 // A few tests are built in C mode or in C++03 mode. The initialization
  14 // of init_crt_anchor is a C++ feature, and <crtdbg.h> ends up including
  15 // MSVC header code which breaks in C++03 mode. Therefore, only expand
  16 // the body of this header when included in C++ >= 11 mode. As this file
  17 // is included in every single translation unit, we're intentionally not
  18 // including test_macros.h (for TEST_STD_VER) but try to keep it to the
  19 // bare minimum.
  20 #if defined(__cplusplus) && __cplusplus > 199711L
  21 #ifndef _DEBUG
  22 #error _DEBUG must be defined when using this header
  23 #endif
  24
  25 #ifndef _WIN32
  26 #error This header can only be used when targeting Windows
  27 #endif
  28
  29 #include <crtdbg.h>
  30
  31 // On Windows in debug builds the default assertion handler opens a new dialog
  32 // window which must be dismissed manually by the user. This function overrides
  33 // that setting and instead changes the assertion handler to log to stderr
  34 // instead.
  35 inline int init_crt_report_mode() {
  36   _CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_FILE);
  37   _CrtSetReportFile(_CRT_WARN, _CRTDBG_FILE_STDERR);
  38   _CrtSetReportMode(_CRT_ERROR, _CRTDBG_MODE_FILE);
  39   _CrtSetReportFile(_CRT_ERROR, _CRTDBG_FILE_STDERR);
  40   _CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_FILE);
  41   _CrtSetReportFile(_CRT_ASSERT, _CRTDBG_FILE_STDERR);
  42   return 0;
  43 }
  44
  45 static int init_crt_anchor = init_crt_report_mode();
  46 #endif // defined(__cplusplus) && __cplusplus > 199711L
  47
  48 #endif // SUPPORT_SET_WINDOWS_CRT_REPORT_MODE_H