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cmake: fix -Wredundant-decls in unity/mingw-w64/gcc/curldebug/DLL builds #13705

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@vszakats vszakats commented May 19, 2024

It affected cmake-unity shared-curltool curldebug mingw-w64 gcc builds
when building the testdeps target.

Apply the solution already used in lib/base64.c and lib/dynbuf.c to
fix it.

Also update an existing GHA CI job to test the issue fixed.

In file included from curl/lib/version_win32.c:35,
                 from curl/_bld/src/CMakeFiles/curl.dir/Unity/unity_0_c.c:145:
curl/lib/memdebug.h:52:14: error: redundant redeclaration of 'curl_dbg_logfile' [-Werror=redundant-decls]
   52 | extern FILE *curl_dbg_logfile;
      |              ^~~~~~~~~~~~~~~~
In file included from curl/src/slist_wc.c:32,
                 from curl/_bld/src/CMakeFiles/curl.dir/Unity/unity_0_c.c:4:
curl/lib/memdebug.h:52:14: note: previous declaration of 'curl_dbg_logfile' with type 'FILE *' {aka 'struct _iobuf *'}
   52 | extern FILE *curl_dbg_logfile;
      |              ^~~~~~~~~~~~~~~~
curl/lib/memdebug.h:55:44: error: redundant redeclaration of 'curl_dbg_malloc' [-Werror=redundant-decls]
   55 | CURL_EXTERN ALLOC_FUNC ALLOC_SIZE(1) void *curl_dbg_malloc(size_t size,
      |                                            ^~~~~~~~~~~~~~~
curl/lib/memdebug.h:55:44: note: previous declaration of 'curl_dbg_malloc' with type 'void *(size_t,  int,  const char *)' {aka 'void *(long long unsigned int,  int,  const char *)'}
   55 | CURL_EXTERN ALLOC_FUNC ALLOC_SIZE(1) void *curl_dbg_malloc(size_t size,
      |                                            ^~~~~~~~~~~~~~~
[...]
curl/lib/memdebug.h:110:17: error: redundant redeclaration of 'curl_dbg_fclose' [-Werror=redundant-decls]
  110 | CURL_EXTERN int curl_dbg_fclose(FILE *file, int line, const char *source);
      |                 ^~~~~~~~~~~~~~~
curl/lib/memdebug.h:110:17: note: previous declaration of 'curl_dbg_fclose' with type 'int(FILE *, int,  const char *)' {aka 'int(struct _iobuf *, int,  const char *)'}
  110 | CURL_EXTERN int curl_dbg_fclose(FILE *file, int line, const char *source);
      |                 ^~~~~~~~~~~~~~~

Ref: https://ci.appveyor.com/project/curlorg/curl/builds/49840554/job/a4aoet17e9qnqx1a#L362

After: https://ci.appveyor.com/project/curlorg/curl/builds/49843735/job/hbo2uah2vj0ns523

Ref: #13689 (CI testing this PR with DEBUGBUILD/CURLDEBUG/shared-static combinations)
Depends-on: #13694
Depends-on: #13800
Closes #13705


Depends-on (fix separate issues also required to pass the updated test):

@vszakats vszakats added cmake tests Windows Windows-specific labels May 19, 2024
vszakats added a commit to vszakats/curl that referenced this pull request May 19, 2024
@github-actions github-actions bot added the CI Continuous Integration label May 19, 2024
vszakats added a commit to vszakats/curl that referenced this pull request May 20, 2024
@vszakats vszakats force-pushed the cmake-mingw-gcc-unity-warning branch from c3ec279 to 17763ae Compare May 20, 2024 23:00
vszakats added a commit that referenced this pull request May 27, 2024
- fix `DEBUGBUILD` guards that should be `UNITTESTS`, in libcurl code
  used by unit tests.
- fix guards for libcurl functions used in unit tests only.
- sync `UNITTEST` attribute between declarations and definitions.
- drop `DEBUGBUILD` guard from test `unit2600`.
- fix guards for libcurl HSTS code used by both a unit test (`unit1660`)
  and `test0446`.
- update an existing AppVeyor CI job to test the issues fixed.

This fixes building tests with `CURLDEBUG` enabled but `DEBUGBUILD`
disabled. This can happen when building tests with CMake with
`ENABLE_DEBUG=ON` in Release config, or with `ENABLE_CURLDEBUG=ON`
and _without_ `ENABLE_DEBUG=ON`. Possibly also with autotools
when using `--enable-curldebug` without `--enable-debug`.

Test results:
- before:
  https://ci.appveyor.com/project/curlorg/curl/builds/49835609
  https://ci.appveyor.com/project/curlorg/curl/builds/49898529/job/k8qpbs8idby70smw
  https://github.com/curl/curl/actions/runs/9259078835/job/25470318167?pr=13798#step:13:821
- after: https://ci.appveyor.com/project/curlorg/curl/builds/49839255
  (the two failures are unrelated, subject to PR #13705)

Ref: #13592 (issue discovery)
Ref: #13689 (CI testing this PR with `DEBUGBUILD`/`CURLDEBUG` combinations)
Closes #13694
vszakats added a commit to vszakats/curl that referenced this pull request May 27, 2024
@vszakats vszakats force-pushed the cmake-mingw-gcc-unity-warning branch from 17763ae to 79b02ec Compare May 27, 2024 19:23
…d builds

It affected cmake-unity shared-curltool curldebug mingw-w64 gcc
builds when building the `testdeps` target.

Apply the solution already used in `lib/base64.c` and `lib/dynbuf.c`
to fix it.

```
In file included from curl/lib/version_win32.c:35,
                 from curl/_bld/src/CMakeFiles/curl.dir/Unity/unity_0_c.c:145:
curl/lib/memdebug.h:52:14: error: redundant redeclaration of 'curl_dbg_logfile' [-Werror=redundant-decls]
   52 | extern FILE *curl_dbg_logfile;
      |              ^~~~~~~~~~~~~~~~
In file included from curl/src/slist_wc.c:32,
                 from curl/_bld/src/CMakeFiles/curl.dir/Unity/unity_0_c.c:4:
curl/lib/memdebug.h:52:14: note: previous declaration of 'curl_dbg_logfile' with type 'FILE *' {aka 'struct _iobuf *'}
   52 | extern FILE *curl_dbg_logfile;
      |              ^~~~~~~~~~~~~~~~
curl/lib/memdebug.h:55:44: error: redundant redeclaration of 'curl_dbg_malloc' [-Werror=redundant-decls]
   55 | CURL_EXTERN ALLOC_FUNC ALLOC_SIZE(1) void *curl_dbg_malloc(size_t size,
      |                                            ^~~~~~~~~~~~~~~
curl/lib/memdebug.h:55:44: note: previous declaration of 'curl_dbg_malloc' with type 'void *(size_t,  int,  const char *)' {aka 'void *(long long unsigned int,  int,  const char *)'}
   55 | CURL_EXTERN ALLOC_FUNC ALLOC_SIZE(1) void *curl_dbg_malloc(size_t size,
      |                                            ^~~~~~~~~~~~~~~
curl/lib/memdebug.h:58:48: error: redundant redeclaration of 'curl_dbg_calloc' [-Werror=redundant-decls]
   58 | CURL_EXTERN ALLOC_FUNC ALLOC_SIZE2(1, 2) void *curl_dbg_calloc(size_t elements,
      |                                                ^~~~~~~~~~~~~~~
curl/lib/memdebug.h:58:48: note: previous declaration of 'curl_dbg_calloc' with type 'void *(size_t,  size_t,  int,  const char *)' {aka 'void *(long long unsigned int,  long long unsigned int,  int,  const char *)'}
   58 | CURL_EXTERN ALLOC_FUNC ALLOC_SIZE2(1, 2) void *curl_dbg_calloc(size_t elements,
      |                                                ^~~~~~~~~~~~~~~
curl/lib/memdebug.h:60:33: error: redundant redeclaration of 'curl_dbg_realloc' [-Werror=redundant-decls]
   60 | CURL_EXTERN ALLOC_SIZE(2) void *curl_dbg_realloc(void *ptr,
      |                                 ^~~~~~~~~~~~~~~~
curl/lib/memdebug.h:60:33: note: previous declaration of 'curl_dbg_realloc' with type 'void *(void *, size_t,  int,  const char *)' {aka 'void *(void *, long long unsigned int,  int,  const char *)'}
   60 | CURL_EXTERN ALLOC_SIZE(2) void *curl_dbg_realloc(void *ptr,
      |                                 ^~~~~~~~~~~~~~~~
curl/lib/memdebug.h:64:18: error: redundant redeclaration of 'curl_dbg_free' [-Werror=redundant-decls]
   64 | CURL_EXTERN void curl_dbg_free(void *ptr, int line, const char *source);
      |                  ^~~~~~~~~~~~~
curl/lib/memdebug.h:64:18: note: previous declaration of 'curl_dbg_free' with type 'void(void *, int,  const char *)'
   64 | CURL_EXTERN void curl_dbg_free(void *ptr, int line, const char *source);
      |                  ^~~~~~~~~~~~~
curl/lib/memdebug.h:65:30: error: redundant redeclaration of 'curl_dbg_strdup' [-Werror=redundant-decls]
   65 | CURL_EXTERN ALLOC_FUNC char *curl_dbg_strdup(const char *str, int line,
      |                              ^~~~~~~~~~~~~~~
curl/lib/memdebug.h:65:30: note: previous declaration of 'curl_dbg_strdup' with type 'char *(const char *, int,  const char *)'
   65 | CURL_EXTERN ALLOC_FUNC char *curl_dbg_strdup(const char *str, int line,
      |                              ^~~~~~~~~~~~~~~
curl/lib/memdebug.h:68:33: error: redundant redeclaration of 'curl_dbg_wcsdup' [-Werror=redundant-decls]
   68 | CURL_EXTERN ALLOC_FUNC wchar_t *curl_dbg_wcsdup(const wchar_t *str,
      |                                 ^~~~~~~~~~~~~~~
curl/lib/memdebug.h:68:33: note: previous declaration of 'curl_dbg_wcsdup' with type 'wchar_t *(const wchar_t *, int,  const char *)' {aka 'short unsigned int *(const short unsigned int *, int,  const char *)'}
   68 | CURL_EXTERN ALLOC_FUNC wchar_t *curl_dbg_wcsdup(const wchar_t *str,
      |                                 ^~~~~~~~~~~~~~~
curl/lib/memdebug.h:73:18: error: redundant redeclaration of 'curl_dbg_memdebug' [-Werror=redundant-decls]
   73 | CURL_EXTERN void curl_dbg_memdebug(const char *logname);
      |                  ^~~~~~~~~~~~~~~~~
curl/lib/memdebug.h:73:18: note: previous declaration of 'curl_dbg_memdebug' with type 'void(const char *)'
   73 | CURL_EXTERN void curl_dbg_memdebug(const char *logname);
      |                  ^~~~~~~~~~~~~~~~~
curl/lib/memdebug.h:74:18: error: redundant redeclaration of 'curl_dbg_memlimit' [-Werror=redundant-decls]
   74 | CURL_EXTERN void curl_dbg_memlimit(long limit);
      |                  ^~~~~~~~~~~~~~~~~
curl/lib/memdebug.h:74:18: note: previous declaration of 'curl_dbg_memlimit' with type 'void(long int)'
   74 | CURL_EXTERN void curl_dbg_memlimit(long limit);
      |                  ^~~~~~~~~~~~~~~~~
curl/lib/memdebug.h:75:18: error: redundant redeclaration of 'curl_dbg_log' [-Werror=redundant-decls]
   75 | CURL_EXTERN void curl_dbg_log(const char *format, ...) CURL_PRINTF(1, 2);
      |                  ^~~~~~~~~~~~
curl/lib/memdebug.h:75:18: note: previous declaration of 'curl_dbg_log' with type 'void(const char *, ...)'
   75 | CURL_EXTERN void curl_dbg_log(const char *format, ...) CURL_PRINTF(1, 2);
      |                  ^~~~~~~~~~~~
curl/lib/memdebug.h:78:27: error: redundant redeclaration of 'curl_dbg_socket' [-Werror=redundant-decls]
   78 | CURL_EXTERN curl_socket_t curl_dbg_socket(int domain, int type, int protocol,
      |                           ^~~~~~~~~~~~~~~
curl/lib/memdebug.h:78:27: note: previous declaration of 'curl_dbg_socket' with type 'curl_socket_t(int,  int,  int,  int,  const char *)' {aka 'long long unsigned int(int,  int,  int,  int,  const char *)'}
   78 | CURL_EXTERN curl_socket_t curl_dbg_socket(int domain, int type, int protocol,
      |                           ^~~~~~~~~~~~~~~
curl/lib/memdebug.h:80:18: error: redundant redeclaration of 'curl_dbg_mark_sclose' [-Werror=redundant-decls]
   80 | CURL_EXTERN void curl_dbg_mark_sclose(curl_socket_t sockfd,
      |                  ^~~~~~~~~~~~~~~~~~~~
curl/lib/memdebug.h:80:18: note: previous declaration of 'curl_dbg_mark_sclose' with type 'void(curl_socket_t,  int,  const char *)' {aka 'void(long long unsigned int,  int,  const char *)'}
   80 | CURL_EXTERN void curl_dbg_mark_sclose(curl_socket_t sockfd,
      |                  ^~~~~~~~~~~~~~~~~~~~
curl/lib/memdebug.h:82:17: error: redundant redeclaration of 'curl_dbg_sclose' [-Werror=redundant-decls]
   82 | CURL_EXTERN int curl_dbg_sclose(curl_socket_t sockfd,
      |                 ^~~~~~~~~~~~~~~
curl/lib/memdebug.h:82:17: note: previous declaration of 'curl_dbg_sclose' with type 'int(curl_socket_t,  int,  const char *)' {aka 'int(long long unsigned int,  int,  const char *)'}
   82 | CURL_EXTERN int curl_dbg_sclose(curl_socket_t sockfd,
      |                 ^~~~~~~~~~~~~~~
curl/lib/memdebug.h:84:27: error: redundant redeclaration of 'curl_dbg_accept' [-Werror=redundant-decls]
   84 | CURL_EXTERN curl_socket_t curl_dbg_accept(curl_socket_t s, void *a, void *alen,
      |                           ^~~~~~~~~~~~~~~
curl/lib/memdebug.h:84:27: note: previous declaration of 'curl_dbg_accept' with type 'curl_socket_t(curl_socket_t,  void *, void *, int,  const char *)' {aka 'long long unsigned int(long long unsigned int,  void *, void *, int,  const char *)'}
   84 | CURL_EXTERN curl_socket_t curl_dbg_accept(curl_socket_t s, void *a, void *alen,
      |                           ^~~~~~~~~~~~~~~
curl/lib/memdebug.h:93:28: error: redundant redeclaration of 'curl_dbg_send' [-Werror=redundant-decls]
   93 | CURL_EXTERN SEND_TYPE_RETV curl_dbg_send(SEND_TYPE_ARG1 sockfd,
      |                            ^~~~~~~~~~~~~
curl/lib/memdebug.h:93:28: note: previous declaration of 'curl_dbg_send' with type 'int(SOCKET,  const char *, int,  int,  int,  const char *)' {aka 'int(long long unsigned int,  const char *, int,  int,  int,  const char *)'}
   93 | CURL_EXTERN SEND_TYPE_RETV curl_dbg_send(SEND_TYPE_ARG1 sockfd,
      |                            ^~~~~~~~~~~~~
curl/lib/memdebug.h:98:28: error: redundant redeclaration of 'curl_dbg_recv' [-Werror=redundant-decls]
   98 | CURL_EXTERN RECV_TYPE_RETV curl_dbg_recv(RECV_TYPE_ARG1 sockfd,
      |                            ^~~~~~~~~~~~~
curl/lib/memdebug.h:98:28: note: previous declaration of 'curl_dbg_recv' with type 'int(SOCKET,  char *, int,  int,  int,  const char *)' {aka 'int(long long unsigned int,  char *, int,  int,  int,  const char *)'}
   98 | CURL_EXTERN RECV_TYPE_RETV curl_dbg_recv(RECV_TYPE_ARG1 sockfd,
      |                            ^~~~~~~~~~~~~
curl/lib/memdebug.h:105:30: error: redundant redeclaration of 'curl_dbg_fopen' [-Werror=redundant-decls]
  105 | CURL_EXTERN ALLOC_FUNC FILE *curl_dbg_fopen(const char *file, const char *mode,
      |                              ^~~~~~~~~~~~~~
curl/lib/memdebug.h:105:30: note: previous declaration of 'curl_dbg_fopen' with type 'FILE *(const char *, const char *, int,  const char *)' {aka 'struct _iobuf *(const char *, const char *, int,  const char *)'}
  105 | CURL_EXTERN ALLOC_FUNC FILE *curl_dbg_fopen(const char *file, const char *mode,
      |                              ^~~~~~~~~~~~~~
curl/lib/memdebug.h:107:30: error: redundant redeclaration of 'curl_dbg_fdopen' [-Werror=redundant-decls]
  107 | CURL_EXTERN ALLOC_FUNC FILE *curl_dbg_fdopen(int filedes, const char *mode,
      |                              ^~~~~~~~~~~~~~~
curl/lib/memdebug.h:107:30: note: previous declaration of 'curl_dbg_fdopen' with type 'FILE *(int,  const char *, int,  const char *)' {aka 'struct _iobuf *(int,  const char *, int,  const char *)'}
  107 | CURL_EXTERN ALLOC_FUNC FILE *curl_dbg_fdopen(int filedes, const char *mode,
      |                              ^~~~~~~~~~~~~~~
curl/lib/memdebug.h:110:17: error: redundant redeclaration of 'curl_dbg_fclose' [-Werror=redundant-decls]
  110 | CURL_EXTERN int curl_dbg_fclose(FILE *file, int line, const char *source);
      |                 ^~~~~~~~~~~~~~~
curl/lib/memdebug.h:110:17: note: previous declaration of 'curl_dbg_fclose' with type 'int(FILE *, int,  const char *)' {aka 'int(struct _iobuf *, int,  const char *)'}
  110 | CURL_EXTERN int curl_dbg_fclose(FILE *file, int line, const char *source);
      |                 ^~~~~~~~~~~~~~~
```
Ref: https://ci.appveyor.com/project/curlorg/curl/builds/49840554/job/a4aoet17e9qnqx1a#L362

Ref: curl#13689 (CI testing this PR with `DEBUGBUILD`/`CURLDEBUG` combinations)
Closes #xxxxx
@vszakats vszakats force-pushed the cmake-mingw-gcc-unity-warning branch from 79b02ec to 963327c Compare May 27, 2024 20:30
@vszakats vszakats closed this in 0fd794d May 27, 2024
@vszakats vszakats deleted the cmake-mingw-gcc-unity-warning branch May 27, 2024 20:56
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