Re: Warnings during building the current master on Win10 with MSYS2/MinGW64

[Eli Zaretskii]

> From: Arash Esbati <arash@gnu.org>
> Date: Wed, 24 Jul 2024 22:16:12 +0200
> 
> boot-time-aux.h: In function 'get_windows_boot_time_fallback':
> boot-time-aux.h:395:26: warning: the comparison will always evaluate as
>                 'true' for the address of 'GetTickCount64' will never be
>                 NULL [-Waddress]
>   395 |   if (GetTickCount64Func != NULL)
>       |                          ^~
> In file included from C:/msys64/mingw64/include/winbase.h:36,
>                  from C:/msys64/mingw64/include/windows.h:70,
>                  from boot-time.c:48:
> C:/msys64/mingw64/include/sysinfoapi.h:42:31: note: 'GetTickCount64' declared 
> here
>    42 |   WINBASEAPI ULONGLONG WINAPI GetTickCount64 (VOID);
>       |                               ^~~~~~~~~~~~~~

This should be reported to Gnulib folks, not here, as it's Gnulib
code.  (The warning is bogus, of course.)

> In file included from regex.c:69:
> regex_internal.c: In function 'create_ci_newstate':
> regex_internal.c:1599:48: warning: 'calloc' sizes specified with 'sizeof' in 
> the earlier argument and not in the later argument [-Wcalloc-transposed-args]
>  1599 |   newstate = (re_dfastate_t *) calloc (sizeof (re_dfastate_t), 1);
>       |                                                ^~~~~~~~~~~~~
> regex_internal.c:1599:48: note: earlier argument should specify number of 
> elements, later size of each element
> regex_internal.c: In function 'create_cd_newstate':
> regex_internal.c:1647:48: warning: 'calloc' sizes specified with 'sizeof' in 
> the earlier argument and not in the later argument [-Wcalloc-transposed-args]
>  1647 |   newstate = (re_dfastate_t *) calloc (sizeof (re_dfastate_t), 1);
>       |                                                ^~~~~~~~~~~~~
> regex_internal.c:1647:48: note: earlier argument should specify number of 
> elements, later size of each element
> In file included from regex.c:70:
> regcomp.c: In function 'init_dfa':
> regcomp.c:834:38: warning: 'calloc' sizes specified with 'sizeof' in the 
> earlier argument and not in the later argument [-Wcalloc-transposed-args]
>   834 |   dfa->state_table = calloc (sizeof (struct re_state_table_entry), 
> table_size);
>       |                                      ^~~~~~
> regcomp.c:834:38: note: earlier argument should specify number of elements, 
> later size of each element
> regcomp.c:865:60: warning: 'calloc' sizes specified with 'sizeof' in the 
> earlier argument and not in the later argument [-Wcalloc-transposed-args]
>   865 |           dfa->sb_char = (re_bitset_ptr_t) calloc (sizeof (bitset_t), 
> 1);
>       |                                                            ^~~~~~~~
> regcomp.c:865:60: note: earlier argument should specify number of elements, 
> later size of each element
> regcomp.c: In function 'parse_bracket_exp':
> regcomp.c:3058:46: warning: 'calloc' sizes specified with 'sizeof' in the 
> earlier argument and not in the later argument [-Wcalloc-transposed-args]
>  3058 |   sbcset = (re_bitset_ptr_t) calloc (sizeof (bitset_t), 1);
>       |                                              ^~~~~~~~
> regcomp.c:3058:46: note: earlier argument should specify number of elements, 
> later size of each element
> regcomp.c:3059:45: warning: 'calloc' sizes specified with 'sizeof' in the 
> earlier argument and not in the later argument [-Wcalloc-transposed-args]
>  3059 |   mbcset = (re_charset_t *) calloc (sizeof (re_charset_t), 1);
>       |                                             ^~~~~~~~~~~~
> regcomp.c:3059:45: note: earlier argument should specify number of elements, 
> later size of each element
> regcomp.c: In function 'build_charclass_op':
> regcomp.c:3551:46: warning: 'calloc' sizes specified with 'sizeof' in the 
> earlier argument and not in the later argument [-Wcalloc-transposed-args]
>  3551 |   sbcset = (re_bitset_ptr_t) calloc (sizeof (bitset_t), 1);
>       |                                              ^~~~~~~~
> regcomp.c:3551:46: note: earlier argument should specify number of elements, 
> later size of each element
> regcomp.c:3557:45: warning: 'calloc' sizes specified with 'sizeof' in the 
> earlier argument and not in the later argument [-Wcalloc-transposed-args]
>  3557 |   mbcset = (re_charset_t *) calloc (sizeof (re_charset_t), 1);
>       |                                             ^~~~~~~~~~~~
> regcomp.c:3557:45: note: earlier argument should specify number of elements, 
> later size of each element
> In file included from regex.c:71:
> regexec.c: In function 'get_subexp':
> regexec.c:2724:47: warning: 'calloc' sizes specified with 'sizeof' in the 
> earlier argument and not in the later argument [-Wcalloc-transposed-args]
>  2724 |               sub_top->path = calloc (sizeof (state_array_t),
>       |                                               ^~~~~~~~~~~~~
> regexec.c:2724:47: note: earlier argument should specify number of elements, 
> later size of each element
> regexec.c: In function 'build_trtable':
> regexec.c:3269:29: warning: 'calloc' sizes specified with 'sizeof' in the 
> earlier argument and not in the later argument [-Wcalloc-transposed-args]
>  3269 |             calloc (sizeof (re_dfastate_t *), SBC_MAX);
>       |                             ^~~~~~~~~~~~~
> regexec.c:3269:29: note: earlier argument should specify number of elements, 
> later size of each element
> regexec.c:3341:44: warning: 'calloc' sizes specified with 'sizeof' in the 
> earlier argument and not in the later argument [-Wcalloc-transposed-args]
>  3341 |         (re_dfastate_t **) calloc (sizeof (re_dfastate_t *), SBC_MAX);
>       |                                            ^~~~~~~~~~~~~
> regexec.c:3341:44: note: earlier argument should specify number of elements, 
> later size of each element
> regexec.c:3372:44: warning: 'calloc' sizes specified with 'sizeof' in the 
> earlier argument and not in the later argument [-Wcalloc-transposed-args]
>  3372 |         (re_dfastate_t **) calloc (sizeof (re_dfastate_t *), 2 * 
> SBC_MAX);
>       |                                            ^~~~~~~~~~~~~
> regexec.c:3372:44: note: earlier argument should specify number of elements, 
> later size of each element
> --8<---------------cut here---------------end--------------->8---

These are all correct, but again, they are about Gnulib code and
should be reported to the Gnulib mailing list.

> And others.  Is there an interest to see them all, should I post them
> here or to the bug tracker?

If the warnings are for Emacs's own sources, please submit a bug
report.  Gnulib-related warnings should be reported to the Gnulib
mailing list.

Thanks.