[issue:492] Re: Compiling euptex using gcc-15 fails

[Kazuki Maeda]

Hi.

https://gcc.gnu.org/gcc-15/changes.html

> C23 by default: GCC 15 changes the default language version for C
> compilation from -std=gnu17 to -std=gnu23.

Since C23 added a new keyword bool, we must change the variable name.

Best regards
Kazuki Maeda

On Sat, 3 May 2025 00:02:43 +0200
Hilmar Preuße <hille42 ＠ web.de> wrote:

> Hello,
>
> when trying to build euptex (inside the TL source code) we noticed
> that building the euptex source code using gcc-15 fails.
>
> The relevant error message (for now) should be:
>
> gcc -DHAVE_CONFIG_H -I. -I../../../texk/web2c -I./w2c
> -I/<<PKGBUILDDIR>>/Work/texk/ptexenc -I/<<PKGBUILDDIR>>/texk/ptexenc
> -I/<<PKGBUILDDIR>>/Work/texk -I/<<PKGBUILDDIR>>/texk
> -I../../../texk/web2c/libmd5  -I../../../texk/web2c/synctexdir
> -D__SyncTeX__ -DSYNCTEX_ENGINE_H=\"synctex-euptex.h\" -Wdate-time
> -D_FORTIFY_SOURCE=2 -Wimplicit -Wreturn-type -g -O2
> -Werror=implicit-function-declaration
> -ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong
> -fstack-clash-protection -Wformat -Werror=format-security
> -mbranch-protection=standard -c -o euptex-euptex0.o `test -f
> 'euptex0.c' || echo '../../../texk/web2c/'`euptex0.c
> euptex0.c: In function ‘convtoks’:
> euptex0.c:13216:11: error: two or more data types in declaration
> specifiers 13216 |   boolean bool  ;
>        |           ^~~~
> euptex0.c:13216:3: warning: useless type name in empty declaration
> 13216 |   boolean bool  ;
>        |   ^~~~~~~
> euptex0.c:13370:12: error: expected identifier or ‘(’ before ‘=’ token
> 13370 |       bool = scankeyword ( 876 ) ;
>        |            ^
> euptex0.c:13372:17: error: expected identifier or ‘(’ before ‘)’ token
> 13372 |       if ( bool )
>        |                 ^
> euptex0.c:13372:12: error: declaration in the controlling expression
> must have an initializer
> 13372 |       if ( bool )
>        |            ^~~~
> euptex0.c:13385:23: error: expected expression before ‘bool’
> 13385 |       getmd5sum ( s , bool ) ;
>        |                       ^~~~
>
> Please be so kind to evaluate. If the issue is already knows and I
> missed the issue tracker carrying the fix, let me know.
>
> Thanks,
>    Hilmar
> --
> #206401 http://counter.li.org
>