curl-curl/lib/memdebug.h
Viktor Szakats 20142f5d06
build: avoid overriding system symbols for fopen functions
By introducing wrappers for them in the curlx namespace:
`curlx_fopen()`, `curlx_fdopen()`, `curlx_fclose()`.

The undefine/redefine/`(function)()` methods broke on systems
implementing these functions as macros. E.g. AIX 32-bit's `fopen()`.

Also:
- rename `lib/fopen.*` to `lib/curl_fopen.*` (for `Curl_fopen()`)
  to make room for the newly added `curlx/fopen.h`.
- curlx: move file-related functions from `multibyte.c` to `fopen.c`.
- tests/server: stop using the curl-specific `fopen()` implementation
  on Windows. Unicode isn't used by runtests, and it isn't critical to
  run tests on longs path. It can be re-enabled if this becomes
  necessary, or if the wrapper receives a feature that's critical for
  test servers.

Reported-by: Andrew Kirillov
Bug: https://github.com/curl/curl/issues/18510#issuecomment-3274393640

Follow-up to bf7375ecc5 #18503
Follow-up to 9863599d69 #18502
Follow-up to 3bb5e58c10 #17827

Closes #18634
2025-09-30 01:10:36 +02:00

57 lines
2.0 KiB
C

#ifndef HEADER_CURL_MEMDEBUG_H
#define HEADER_CURL_MEMDEBUG_H
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
/*
* CAUTION: this header is designed to work when included by the app-side
* as well as the library. Do not mix with library internals!
*/
#ifdef CURLDEBUG
/* Set this symbol on the command-line, recompile all lib-sources */
#undef strdup
#define strdup(ptr) curl_dbg_strdup(ptr, __LINE__, __FILE__)
#undef malloc
#define malloc(size) curl_dbg_malloc(size, __LINE__, __FILE__)
#undef calloc
#define calloc(nbelem,size) curl_dbg_calloc(nbelem, size, __LINE__, __FILE__)
#undef realloc
#define realloc(ptr,size) curl_dbg_realloc(ptr, size, __LINE__, __FILE__)
#undef free
#define free(ptr) curl_dbg_free(ptr, __LINE__, __FILE__)
#ifdef _WIN32
#undef Curl_tcsdup
#ifdef UNICODE
#define Curl_tcsdup(ptr) curl_dbg_wcsdup(ptr, __LINE__, __FILE__)
#else
#define Curl_tcsdup(ptr) curl_dbg_strdup(ptr, __LINE__, __FILE__)
#endif
#endif /* _WIN32 */
#endif /* CURLDEBUG */
#endif /* HEADER_CURL_MEMDEBUG_H */