[Bug libstdc++/108062] New: Test spdlog c++20 std::format

[Bug libstdc++/108062] New: Test spdlog c++20 std::format

[lukaszcz18 at wp dot pl]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108062

            Bug ID: 108062
           Summary: Test spdlog c++20 std::format
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: lukaszcz18 at wp dot pl
  Target Milestone: ---

///////////////////////////////////////////////////////////////////////////////
// Uncomment to use C++20 std::format instead of fmt.
//
// #define SPDLOG_USE_STD_FORMAT
///////////////////////////////////////////////////////////////////////////////

I use gcc 13.0.0 20221211, spdlog 1.11.0 20221211
In file included from
c:\gcc1300\x86_64-w64-mingw32\include\spdlog\fmt\fmt.h:14,
                 from c:\gcc1300\x86_64-w64-mingw32\include\spdlog\common.h:50,
                 from c:\gcc1300\x86_64-w64-mingw32\include\spdlog\spdlog.h:12,
                 from common.h:40,
                 from BMPFormat.cpp:28:
c:\gcc1300\include\c++\13.0.0\format:3350:40: error: expected identifier before
',' token
 3350 |         __format::__do_vformat_to(_Out_, basic_string_view<_CharT_>,
      |                                        ^
c:\gcc1300\include\c++\13.0.0\format: In instantiation of '_Out
std::__format::__do_vformat_to(_Out, std::basic_string_view<_CharT>, const
std::basic_format_args<_Context>&, const std::locale*) [with _Out =
_Sink_iter<char>; _CharT = char; _Context =
std::basic_format_context<_Sink_iter<char>, char>]':
c:\gcc1300\include\c++\13.0.0\format:3646:39:   required from '_Out
std::vformat_to(_Out, string_view, format_args) [with _Out =
__format::_Sink_iter<char>; string_view = basic_string_view<char>; format_args
= basic_format_args<basic_format_context<__format::_Sink_iter<char>, char> >]'
c:\gcc1300\include\c++\13.0.0\format:3673:20:   required from here
c:\gcc1300\include\c++\13.0.0\format:3614:24: error:
'std::basic_format_context<_Out,
_CharT>::basic_format_context(std::basic_format_args<std::basic_format_context<_Out,
_CharT> >, _Out) [with _Out = std::__format::_Sink_iter<char>; _CharT = char]'
is private within this context
 3614 |                      ? _Context(__args, __sink_out)
      |                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
c:\gcc1300\include\c++\13.0.0\format:3338:7: note: declared private here
 3338 |       basic_format_context(basic_format_args<basic_format_context>
__args,
      |       ^~~~~~~~~~~~~~~~~~~~
c:\gcc1300\include\c++\13.0.0\format:3615:24: error:
'std::basic_format_context<_Out,
_CharT>::basic_format_context(std::basic_format_args<std::basic_format_context<_Out,
_CharT> >, _Out, const std::locale&) [with _Out =
std::__format::_Sink_iter<char>; _CharT = char]' is private within this context
 3615 |                      : _Context(__args, __sink_out, *__loc);
      |                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
c:\gcc1300\include\c++\13.0.0\format:3343:7: note: declared private here
 3343 |       basic_format_context(basic_format_args<basic_format_context>
__args,
      |       ^~~~~~~~~~~~~~~~~~~~
c:\gcc1300\include\c++\13.0.0\format: In instantiation of '_Out
std::__format::__do_vformat_to(_Out, std::basic_string_view<_CharT>, const
std::basic_format_args<_Context>&, const std::locale*) [with _Out =
_Sink_iter<wchar_t>; _CharT = wchar_t; _Context =
std::basic_format_context<_Sink_iter<wchar_t>, wchar_t>]':
c:\gcc1300\include\c++\13.0.0\format:3652:39:   required from '_Out
std::vformat_to(_Out, wstring_view, wformat_args) [with _Out =
__format::_Sink_iter<wchar_t>; wstring_view = basic_string_view<wchar_t>;
wformat_args =
basic_format_args<basic_format_context<__format::_Sink_iter<wchar_t>, wchar_t>
>]'
c:\gcc1300\include\c++\13.0.0\format:3682:20:   required from here
c:\gcc1300\include\c++\13.0.0\format:3614:24: error:
'std::basic_format_context<_Out,
_CharT>::basic_format_context(std::basic_format_args<std::basic_format_context<_Out,
_CharT> >, _Out) [with _Out = std::__format::_Sink_iter<wchar_t>; _CharT =
wchar_t]' is private within this context
 3614 |                      ? _Context(__args, __sink_out)
      |                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~

[Bug libstdc++/108062] Test spdlog c++20 std::format

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108062

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I tried to test this but my cmake is not new enough:
  Target "example" requires the language dialect "CXX20" , but CMake does not

[Bug libstdc++/108062] Test spdlog c++20 std::format

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108062

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2022-12-12
             Status|UNCONFIRMED                 |WAITING
     Ever confirmed|0                           |1

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Not a valid bug report, please read https://gcc.gnu.org/bugs/

[Bug libstdc++/108062] Test spdlog c++20 std::format

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108062

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Why am I having to say this AGAIN?

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107886#c7
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107886#c9
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104592#c3
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104592#c5

[Bug libstdc++/108062] Test spdlog c++20 std::format

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108062

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|unassigned at gcc dot gnu.org      |redi at gcc dot gnu.org
             Status|WAITING                     |ASSIGNED

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jamaika from comment #0)
> c:\gcc1300\include\c++\13.0.0\format:3350:40: error: expected identifier
> before ',' token
>  3350 |         __format::__do_vformat_to(_Out_, basic_string_view<_CharT_>,
>       |                                        ^

This looks like you've got _Out_ defined as a macro, which causes an error in
this friend declaration.

Then because the function isn't a friend, you get access errors in the function
that's supposed to be a friend:


> c:\gcc1300\include\c++\13.0.0\format: In instantiation of '_Out
> std::__format::__do_vformat_to(_Out, std::basic_string_view<_CharT>, const
> std::basic_format_args<_Context>&, const std::locale*) [with _Out =
> _Sink_iter<char>; _CharT = char; _Context =
> std::basic_format_context<_Sink_iter<char>, char>]':
> c:\gcc1300\include\c++\13.0.0\format:3646:39:   required from '_Out
> std::vformat_to(_Out, string_view, format_args) [with _Out =
> __format::_Sink_iter<char>; string_view = basic_string_view<char>;
> format_args =
> basic_format_args<basic_format_context<__format::_Sink_iter<char>, char> >]'
> c:\gcc1300\include\c++\13.0.0\format:3673:20:   required from here
> c:\gcc1300\include\c++\13.0.0\format:3614:24: error:
> 'std::basic_format_context<_Out,
> _CharT>::basic_format_context(std::basic_format_args<std::
> basic_format_context<_Out, _CharT> >, _Out) [with _Out =
> std::__format::_Sink_iter<char>; _CharT = char]' is private within this
> context
>  3614 |                      ? _Context(__args, __sink_out)
>       |                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
> c:\gcc1300\include\c++\13.0.0\format:3338:7: note: declared private here
>  3338 |       basic_format_context(basic_format_args<basic_format_context>
> __args,
>       |       ^~~~~~~~~~~~~~~~~~~~


And I think that's because _Out_ is a Windows SAL macro:

mingw-w64-tools/widl/include/sal.h:#define _Out_

So confirmed as a bug but next time please provide a proper bug report.

[Bug libstdc++/108062] Test spdlog c++20 std::format

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108062

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
   Target Milestone|---                         |13.0
             Status|ASSIGNED                    |RESOLVED
           Keywords|                            |rejects-valid

--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed by r13-4613-gcb363fd9f19eb7

[Bug libstdc++/108062] Test spdlog c++20 std::format

[lukaszcz18 at wp dot pl]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108062

--- Comment #6 from Jamaika <lukaszcz18 at wp dot pl> ---
Thanks Jonathan

Thanks for the quick fix of the given errors. I realize that there may be other
errors not necessarily from gcc.


Test new codecs HTJPEG2000 C++20 Grok with spdlog 1.11.0 for Windows 10

In file included from
c:\gcc1300\x86_64-w64-mingw32\include\spdlog\fmt\fmt.h:14,
                 from c:\gcc1300\x86_64-w64-mingw32\include\spdlog\common.h:50,
                 from c:\gcc1300\x86_64-w64-mingw32\include\spdlog\spdlog.h:12,
                 from common.h:40,
                 from PNMFormat.cpp:29:
c:\gcc1300\include\c++\13.0.0\format: In instantiation of 'static
std::basic_format_args<_Context>::_Store<_Args>::_Element_t
std::basic_format_args<_Context>::_Store<_Args>::_S_make_elt(_Tp&) [with _Tp =
PNM_COLOUR_SPACE; _Args =
{std::basic_format_arg<std::basic_format_context<std::__format::_Sink_iter<char>,
char> >::handle,
std::basic_format_arg<std::basic_format_context<std::__format::_Sink_iter<char>,
char> >::handle}; _Context =
std::basic_format_context<std::__format::_Sink_iter<char>, char>; _Element_t =
std::basic_format_args<std::basic_format_context<std::__format::_Sink_iter<char>,
char>
>::_Store<std::basic_format_arg<std::basic_format_context<std::__format::_Sink_iter<char>,
char> >::handle,
std::basic_format_arg<std::basic_format_context<std::__format::_Sink_iter<char>,
char> >::handle>::_Element_t]':
c:\gcc1300\include\c++\13.0.0\format:3248:25:   required from
'std::basic_format_args<_Context>::_Store<_Args>::_Store(_Tp& ...) [with _Tp =
{PNM_COLOUR_SPACE, PNM_COLOUR_SPACE}; _Args =
{std::basic_format_arg<std::basic_format_context<std::__format::_Sink_iter<char>,
char> >::handle,
std::basic_format_arg<std::basic_format_context<std::__format::_Sink_iter<char>,
char> >::handle}; _Context =
std::basic_format_context<std::__format::_Sink_iter<char>, char>]'
c:\gcc1300\include\c++\13.0.0\format:3300:14:   required from 'auto
std::make_format_args(_Args&& ...) [with _Context =
basic_format_context<__format::_Sink_iter<char>, char>; _Args =
{PNM_COLOUR_SPACE&, PNM_COLOUR_SPACE&}]'
c:\gcc1300\x86_64-w64-mingw32\include\spdlog\logger.h:372:88:   required from
'void spdlog::logger::log_(spdlog::source_loc, spdlog::level::level_enum,
spdlog::string_view_t, Args&& ...) [with Args = {PNM_COLOUR_SPACE&,
PNM_COLOUR_SPACE&}; spdlog::string_view_t = std::basic_string_view<char>]'
c:\gcc1300\x86_64-w64-mingw32\include\spdlog\logger.h:90:13:   required from
'void spdlog::logger::log(spdlog::source_loc, spdlog::level::level_enum,
spdlog::format_string_t<Args ...>, Args&& ...) [with Args = {PNM_COLOUR_SPACE&,
PNM_COLOUR_SPACE&}; spdlog::format_string_t<Args ...> =
std::basic_string_view<char>]'
c:\gcc1300\x86_64-w64-mingw32\include\spdlog\logger.h:96:12:   required from
'void spdlog::logger::log(spdlog::level::level_enum,
spdlog::format_string_t<Args ...>, Args&& ...) [with Args = {PNM_COLOUR_SPACE&,
PNM_COLOUR_SPACE&}; spdlog::format_string_t<Args ...> =
std::basic_string_view<char>]'
c:\gcc1300\x86_64-w64-mingw32\include\spdlog\logger.h:164:12:   required from
'void spdlog::logger::warn(spdlog::format_string_t<Args ...>, Args&& ...) [with
Args = {PNM_COLOUR_SPACE&, PNM_COLOUR_SPACE&}; spdlog::format_string_t<Args
...> = std::basic_string_view<char>]'
c:\gcc1300\x86_64-w64-mingw32\include\spdlog\spdlog.h:167:31:   required from
'void spdlog::warn(format_string_t<Args ...>, Args&& ...) [with Args =
{PNM_COLOUR_SPACE&, PNM_COLOUR_SPACE&}; format_string_t<Args ...> =
std::basic_string_view<char>]'
PNMFormat.cpp:600:16:   required from here
c:\gcc1300\include\c++\13.0.0\format:3237:40: error: no matching function for
call to
'std::basic_format_arg<std::basic_format_context<std::__format::_Sink_iter<char>,
char> >::basic_format_arg(PNM_COLOUR_SPACE&)'
 3237 |             basic_format_arg<_Context> __arg(__v);
      |                                        ^~~~~
c:\gcc1300\include\c++\13.0.0\format:3005:9: note: candidate: 'template<class
_Tp>  requires  __formattable_with<_Tp, _Context, typename
_Context::formatter_type<typename std::remove_const<_Tp>::type>,
std::basic_format_parse_context<typename _Context::char_type> >
std::basic_format_arg<_Context>::basic_format_arg(_Tp&) [with _Context =
std::basic_format_context<std::__format::_Sink_iter<char>, char>]'
 3005 |         basic_format_arg(_Tp& __v) noexcept
      |         ^~~~~~~~~~~~~~~~
c:\gcc1300\include\c++\13.0.0\format:3005:9: note:   template argument
deduction/substitution failed:
c:\gcc1300\include\c++\13.0.0\format:3005:9: note: constraints not satisfied
In file included from c:\gcc1300\include\c++\13.0.0\compare:37,
                 from c:\gcc1300\include\c++\13.0.0\bits\char_traits.h:48,
                 from c:\gcc1300\include\c++\13.0.0\string:42,
                 from IImageFormat.h:21,
                 from ImageFormat.h:20,
                 from PNMFormat.h:19,
                 from PNMFormat.cpp:26:
c:\gcc1300\include\c++\13.0.0\concepts: In substitution of 'template<class _Tp>
 requires  __formattable_with<_Tp, _Context, typename
_Context::formatter_type<typename std::remove_const<_Tp>::type>,
std::basic_format_parse_context<typename _Context::char_type> >
std::basic_format_arg<std::basic_format_context<std::__format::_Sink_iter<char>,
char> >::basic_format_arg(_Tp&) [with _Tp =
std::basic_format_context<std::__format::_Sink_iter<char>, char>]':
c:\gcc1300\include\c++\13.0.0\format:3237:33:   required from 'static
std::basic_format_args<_Context>::_Store<_Args>::_Element_t
std::basic_format_args<_Context>::_Store<_Args>::_S_make_elt(_Tp&) [with _Tp =
PNM_COLOUR_SPACE; _Args =
{std::basic_format_arg<std::basic_format_context<std::__format::_Sink_iter<char>,
char> >::handle,
std::basic_format_arg<std::basic_format_context<std::__format::_Sink_iter<char>,
char> >::handle}; _Context =
std::basic_format_context<std::__format::_Sink_iter<char>, char>; _Element_t =
std::basic_format_args<std::basic_format_context<std::__format::_Sink_iter<char>,
char>
>::_Store<std::basic_format_arg<std::basic_format_context<std::__format::_Sink_iter<char>,
char> >::handle,
std::basic_format_arg<std::basic_format_context<std::__format::_Sink_iter<char>,
char> >::handle>::_Element_t]'
c:\gcc1300\include\c++\13.0.0\format:3248:25:   required from
'std::basic_format_args<_Context>::_Store<_Args>::_Store(_Tp& ...) [with _Tp =
{PNM_COLOUR_SPACE, PNM_COLOUR_SPACE}; _Args =
{std::basic_format_arg<std::basic_format_context<std::__format::_Sink_iter<char>,
char> >::handle,
std::basic_format_arg<std::basic_format_context<std::__format::_Sink_iter<char>,
char> >::handle}; _Context =
std::basic_format_context<std::__format::_Sink_iter<char>, char>]'
c:\gcc1300\include\c++\13.0.0\format:3300:14:   required from 'auto
std::make_format_args(_Args&& ...) [with _Context =
basic_format_context<__format::_Sink_iter<char>, char>; _Args =
{PNM_COLOUR_SPACE&, PNM_COLOUR_SPACE&}]'
c:\gcc1300\x86_64-w64-mingw32\include\spdlog\logger.h:372:88:   required from
'void spdlog::logger::log_(spdlog::source_loc, spdlog::level::level_enum,
spdlog::string_view_t, Args&& ...) [with Args = {PNM_COLOUR_SPACE&,
PNM_COLOUR_SPACE&}; spdlog::string_view_t = std::basic_string_view<char>]'
c:\gcc1300\x86_64-w64-mingw32\include\spdlog\logger.h:90:13:   required from
'void spdlog::logger::log(spdlog::source_loc, spdlog::level::level_enum,
spdlog::format_string_t<Args ...>, Args&& ...) [with Args = {PNM_COLOUR_SPACE&,
PNM_COLOUR_SPACE&}; spdlog::format_string_t<Args ...> =
std::basic_string_view<char>]'
c:\gcc1300\x86_64-w64-mingw32\include\spdlog\logger.h:96:12:   required from
'void spdlog::logger::log(spdlog::level::level_enum,
spdlog::format_string_t<Args ...>, Args&& ...) [with Args = {PNM_COLOUR_SPACE&,
PNM_COLOUR_SPACE&}; spdlog::format_string_t<Args ...> =
std::basic_string_view<char>]'
c:\gcc1300\x86_64-w64-mingw32\include\spdlog\logger.h:164:12:   required from
'void spdlog::logger::warn(spdlog::format_string_t<Args ...>, Args&& ...) [with
Args = {PNM_COLOUR_SPACE&, PNM_COLOUR_SPACE&}; spdlog::format_string_t<Args
...> = std::basic_string_view<char>]'
c:\gcc1300\x86_64-w64-mingw32\include\spdlog\spdlog.h:167:31:   required from
'void spdlog::warn(format_string_t<Args ...>, Args&& ...) [with Args =
{PNM_COLOUR_SPACE&, PNM_COLOUR_SPACE&}; format_string_t<Args ...> =
std::basic_string_view<char>]'
PNMFormat.cpp:600:16:   required from here
c:\gcc1300\include\c++\13.0.0\concepts:152:13:   required for the satisfaction
of 'constructible_from<_Tp, _Tp>' [with _Tp = std::formatter<PNM_COLOUR_SPACE,
char>]
c:\gcc1300\include\c++\13.0.0\concepts:166:13:   required for the satisfaction
of 'move_constructible<_Tp>' [with _Tp = std::formatter<PNM_COLOUR_SPACE,
char>]
c:\gcc1300\include\c++\13.0.0\concepts:171:13:   required for the satisfaction
of 'copy_constructible<_Tp>' [with _Tp = std::formatter<PNM_COLOUR_SPACE,
char>]
c:\gcc1300\include\c++\13.0.0\concepts:267:13:   required for the satisfaction
of 'copyable<_Tp>' [with _Tp = std::formatter<PNM_COLOUR_SPACE, char>]
c:\gcc1300\include\c++\13.0.0\concepts:272:13:   required for the satisfaction
of 'semiregular<_Formatter>' [with _Formatter =
std::formatter<PNM_COLOUR_SPACE, char>]
c:\gcc1300\include\c++\13.0.0\format:2213:13:   required for the satisfaction
of '__formattable_with<_Tp, _Context, typename
_Context::formatter_type<typename std::remove_const<_Tp>::type>,
std::basic_format_parse_context<typename _Context::char_type> >' [with _Tp =
PNM_COLOUR_SPACE; _Context =
std::basic_format_context<std::__format::_Sink_iter<char>, char>]
c:\gcc1300\include\c++\13.0.0\concepts:153:30: note: the expression
'is_constructible_v<_Tp, _Args ...> [with _Tp =
std::formatter<PNM_COLOUR_SPACE, char>; _Args =
{std::formatter<PNM_COLOUR_SPACE, char>}]' evaluated to 'false'
  153 |       = destructible<_Tp> && is_constructible_v<_Tp, _Args...>;
      |                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
c:\gcc1300\include\c++\13.0.0\format: In instantiation of 'static
std::basic_format_args<_Context>::_Store<_Args>::_Element_t
std::basic_format_args<_Context>::_Store<_Args>::_S_make_elt(_Tp&) [with _Tp =
PNM_COLOUR_SPACE; _Args =
{std::basic_format_arg<std::basic_format_context<std::__format::_Sink_iter<char>,
char> >::handle,
std::basic_format_arg<std::basic_format_context<std::__format::_Sink_iter<char>,
char> >::handle}; _Context =
std::basic_format_context<std::__format::_Sink_iter<char>, char>; _Element_t =
std::basic_format_args<std::basic_format_context<std::__format::_Sink_iter<char>,
char>
>::_Store<std::basic_format_arg<std::basic_format_context<std::__format::_Sink_iter<char>,
char> >::handle,
std::basic_format_arg<std::basic_format_context<std::__format::_Sink_iter<char>,
char> >::handle>::_Element_t]':
c:\gcc1300\include\c++\13.0.0\format:3248:25:   required from
'std::basic_format_args<_Context>::_Store<_Args>::_Store(_Tp& ...) [with _Tp =
{PNM_COLOUR_SPACE, PNM_COLOUR_SPACE}; _Args =
{std::basic_format_arg<std::basic_format_context<std::__format::_Sink_iter<char>,
char> >::handle,
std::basic_format_arg<std::basic_format_context<std::__format::_Sink_iter<char>,
char> >::handle}; _Context =
std::basic_format_context<std::__format::_Sink_iter<char>, char>]'
c:\gcc1300\include\c++\13.0.0\format:3300:14:   required from 'auto
std::make_format_args(_Args&& ...) [with _Context =
basic_format_context<__format::_Sink_iter<char>, char>; _Args =
{PNM_COLOUR_SPACE&, PNM_COLOUR_SPACE&}]'
c:\gcc1300\x86_64-w64-mingw32\include\spdlog\logger.h:372:88:   required from
'void spdlog::logger::log_(spdlog::source_loc, spdlog::level::level_enum,
spdlog::string_view_t, Args&& ...) [with Args = {PNM_COLOUR_SPACE&,
PNM_COLOUR_SPACE&}; spdlog::string_view_t = std::basic_string_view<char>]'
c:\gcc1300\x86_64-w64-mingw32\include\spdlog\logger.h:90:13:   required from
'void spdlog::logger::log(spdlog::source_loc, spdlog::level::level_enum,
spdlog::format_string_t<Args ...>, Args&& ...) [with Args = {PNM_COLOUR_SPACE&,
PNM_COLOUR_SPACE&}; spdlog::format_string_t<Args ...> =
std::basic_string_view<char>]'
c:\gcc1300\x86_64-w64-mingw32\include\spdlog\logger.h:96:12:   required from
'void spdlog::logger::log(spdlog::level::level_enum,
spdlog::format_string_t<Args ...>, Args&& ...) [with Args = {PNM_COLOUR_SPACE&,
PNM_COLOUR_SPACE&}; spdlog::format_string_t<Args ...> =
std::basic_string_view<char>]'
c:\gcc1300\x86_64-w64-mingw32\include\spdlog\logger.h:164:12:   required from
'void spdlog::logger::warn(spdlog::format_string_t<Args ...>, Args&& ...) [with
Args = {PNM_COLOUR_SPACE&, PNM_COLOUR_SPACE&}; spdlog::format_string_t<Args
...> = std::basic_string_view<char>]'
c:\gcc1300\x86_64-w64-mingw32\include\spdlog\spdlog.h:167:31:   required from
'void spdlog::warn(format_string_t<Args ...>, Args&& ...) [with Args =
{PNM_COLOUR_SPACE&, PNM_COLOUR_SPACE&}; format_string_t<Args ...> =
std::basic_string_view<char>]'
PNMFormat.cpp:600:16:   required from here
c:\gcc1300\include\c++\13.0.0\format:2820:7: note: candidate:
'std::basic_format_arg<_Context>::basic_format_arg() [with _Context =
std::basic_format_context<std::__format::_Sink_iter<char>, char>]'
 2820 |       basic_format_arg() noexcept : _M_type(__format::_Arg_none) { }
      |       ^~~~~~~~~~~~~~~~
c:\gcc1300\include\c++\13.0.0\format:2820:7: note:   candidate expects 0
arguments, 1 provided
c:\gcc1300\include\c++\13.0.0\format:2758:11: note: candidate: 'constexpr
std::basic_format_arg<std::basic_format_context<std::__format::_Sink_iter<char>,
char> >::basic_format_arg(const
std::basic_format_arg<std::basic_format_context<std::__format::_Sink_iter<char>,
char> >&)'
 2758 |     class basic_format_arg
      |           ^~~~~~~~~~~~~~~~
c:\gcc1300\include\c++\13.0.0\format:2758:11: note:   no known conversion for
argument 1 from 'PNM_COLOUR_SPACE' to 'const
std::basic_format_arg<std::basic_format_context<std::__format::_Sink_iter<char>,
char> >&'
c:\gcc1300\include\c++\13.0.0\format:2758:11: note: candidate: 'constexpr
std::basic_format_arg<std::basic_format_context<std::__format::_Sink_iter<char>,
char>
>::basic_format_arg(std::basic_format_arg<std::basic_format_context<std::__format::_Sink_iter<char>,
char> >&&)'
c:\gcc1300\include\c++\13.0.0\format:2758:11: note:   no known conversion for
argument 1 from 'PNM_COLOUR_SPACE' to
'std::basic_format_arg<std::basic_format_context<std::__format::_Sink_iter<char>,
char> >&&'
TIFFFormat.cpp: In function 'void set_resolution(double*, float, float, short
int)':
TIFFFormat.cpp:697:18: error: 'floor' was not declared in this scope; did you
mean 'std::chrono::floor'?
  697 |         res[i] = floor(res[i]+0.5);
      |                  ^~~~~
      |                  std::chrono::floor
In file included from c:\gcc1300\include\c++\13.0.0\mutex:44,
                 from ImageFormat.h:25,
                 from TIFFFormat.h:30,
                 from TIFFFormat.cpp:29:
c:\gcc1300\include\c++\13.0.0\bits\chrono.h:1023:7: note: 'std::chrono::floor'
declared here
 1023 |       floor(const time_point<_Clock, _Dur>& __tp)
      |       ^~~~~

[Bug libstdc++/108062] Test spdlog c++20 std::format

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108062

--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
You still aren't showing the code that gives this error, so I'm just not going
to bother reading your big reports in future 

PNM_COLOUR_SPACE cannot be formatted because there is no
std::formatter<PNM_COLOUR_SPACE> specialization.

[Bug libstdc++/108062] Test spdlog c++20 std::format

[lukaszcz18 at wp dot pl]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108062

--- Comment #8 from Jamaika <lukaszcz18 at wp dot pl> ---
Thanks for tips std::formatter<PNM_COLOUR_SPACE>
Something has improved. GCC notices that there isn't <cmath> for TIFFFormat.cpp