GNU bug report logs - #71425
test: Accommodate C23 compilers.

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Collin Funk <collin.funk1 <at> gmail.com>
To: automake-patches <at> gnu.org
Subject: test: Accommodate C23 compilers.
Date: Fri, 07 Jun 2024 22:05:49 -0700

[Message part 1 (text/plain, inline)]

In the yacc test I see warnings like this:

main.c:4:10: error: implicit declaration of function ‘yyparse’ [-Wimplicit-function-declaration]
    4 |   return yyparse ();
      |          ^~~~~~~

and some for yylex which is declared, but with an empty parameter list
instead of void.

I assume this is because GCC becoming more strict to conform with C23
requirements. I did these tests with GCC 14.1.

I have attached a patch fixing these tests on my system.

Collin

[0001-test-Accommodate-C23-compilers.patch (text/x-patch, attachment)]

Message #8 received at 71425 <at> debbugs.gnu.org (full text, mbox):

From: Sam James <sam <at> gentoo.org>
To: Collin Funk <collin.funk1 <at> gmail.com>
Cc: 71425 <at> debbugs.gnu.org
Subject: Re: [bug#71425] test: Accommodate C23 compilers.
Date: Sat, 08 Jun 2024 08:24:08 +0100

[Message part 1 (text/plain, inline)]

Collin Funk <collin.funk1 <at> gmail.com> writes:

> In the yacc test I see warnings like this:
>
> main.c:4:10: error: implicit declaration of function ‘yyparse’ [-Wimplicit-function-declaration]
>     4 |   return yyparse ();
>       |          ^~~~~~~
>
> and some for yylex which is declared, but with an empty parameter list
> instead of void.
>
> I assume this is because GCC becoming more strict to conform with C23
> requirements. I did these tests with GCC 14.1.
>

This is actually some work we've been doing to enforce C99 instead:
https://gcc.gnu.org/gcc-14/porting_to.html#warnings-as-errors.

> I have attached a patch fixing these tests on my system.
>
> Collin
>
> [2. text/x-patch; 0001-test-Accommodate-C23-compilers.patch]...

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Message #11 received at 71425 <at> debbugs.gnu.org (full text, mbox):

From: Karl Berry <karl <at> freefriends.org>
To: collin.funk1 <at> gmail.com
Cc: 71425 <at> debbugs.gnu.org
Subject: Re: [bug#71425] test: Accommodate C23 compilers.
Date: Sun, 16 Jun 2024 14:39:05 -0600

Hi Collin,

    In the yacc test I see warnings like this:

    main.c:4:10: error: implicit declaration of function 'yyparse' [-Wimplicit-function-declaration]
        4 |   return yyparse ();
          |          ^~~~~~~

    and some for yylex which is declared, but with an empty parameter list
    instead of void.

    I assume this is because GCC becoming more strict to conform with C23
    requirements. I did these tests with GCC 14.1.

    I have attached a patch fixing these tests on my system.

Thanks for the report and patch. I applied it. I fear new
incompatibility errors with other systems in other cases, since these
yyparse/yylex declarations have been a constant pain ever since they
started getting "improved", but I guess we'll find out. --thanks, karl.

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