NetBSD Problem Report #59440

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Date: Fri, 23 May 2025 08:50:44 +0000 (UTC)
From: bad@bsd.de
Reply-To: bad@bsd.de
To: gnats-bugs@NetBSD.org
Subject: tools build failures with gcc 15.1
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>Number:         59440
>Category:       toolchain
>Synopsis:       tools build failures with gcc 15.1
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    bad
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri May 23 08:55:00 +0000 2025
>Last-Modified:  Fri May 23 09:40:01 +0000 2025
>Originator:     Christoph Badura
>Release:        10.99.14 2025-05-20
>Organization:
The Conflicting Prototypes Foundation
>Environment:
Manjaro Linux, amd64, gcc 15.1
>Description:
Tools build errors reported by Vasyl Maksym Lanko so far:

In file included from /home/maksym/netbsd-gsoc/src/tools/texinfo/../../external/gpl2/texinfo/dist/lib/substring.c:22:
/home/maksym/netbsd-gsoc/src/tools/texinfo/../../external/gpl2/texinfo/dist/lib/system.h:123:12: error: conflicting types for 'strcasecmp'; have 'int(void)'
  123 | extern int strcasecmp ();
      |            ^~~~~~~~~~
In file included from /usr/include/string.h:462,
                 from /home/maksym/netbsd-gsoc/src/tools/texinfo/../../external/gpl2/texinfo/dist/lib/system.h:76:
/usr/include/strings.h:116:12: note: previous declaration of 'strcasecmp' with type 'int(const char *, const char *)'
  116 | extern int strcasecmp (const char *__s1, const char *__s2)
      |            ^~~~~~~~~~
/home/maksym/netbsd-gsoc/src/tools/texinfo/../../external/gpl2/texinfo/dist/lib/system.h:127:12: error: conflicting types for 'strncasecmp'; have 'int(void)'
  127 | extern int strncasecmp ();
      |            ^~~~~~~~~~~
/usr/include/strings.h:120:12: note: previous declaration of 'strncasecmp' with type 'int(const char *, const char *, long unsigned int)'
  120 | extern int strncasecmp (const char *__s1, const char *__s2, size_t __n)
      |            ^~~~~~~~~~~

*** Failed target: substring.o

And:

/home/maksym/netbsd-gsoc/src/tools/texinfo/../../external/gpl2/texinfo/dist/lib/mkstemp.c:43:10: error: too many arguments to function '__gen_tempname'; expected     0, have 2

I have warning about the same in the logs from my builds on macOS from clang.  Apparently gcc 15.1 makes these conflicts an error now.

>How-To-Repeat:
On Manjaro Linux with gcc 15.1: build.sh -m amd64 tools

>Fix:
For the first error: texinfo/dist/lib/system.h enables the prototypeless declaration because configure never checks for the declarations of strcasecmp and strncasecmp and therefore the relevant #defines aren't in config.h.

For the second error: texinfo/dist/lib/mkstemp.c has an unconditional prototypeless declaration for __gen_tempname.

>Release-Note:

>Audit-Trail:

Responsible-Changed-From-To: toolchain-manager->bad
Responsible-Changed-By: bad@NetBSD.org
Responsible-Changed-When: Fri, 23 May 2025 08:57:13 +0000
Responsible-Changed-Why:
take


From: "Christoph Badura" <bad@netbsd.org>
To: gnats-bugs@gnats.NetBSD.org
Cc: 
Subject: PR/59440 CVS commit: src/external/gpl2/texinfo/dist/lib
Date: Fri, 23 May 2025 09:34:12 +0000

 Module Name:	src
 Committed By:	bad
 Date:		Fri May 23 09:34:12 UTC 2025

 Modified Files:
 	src/external/gpl2/texinfo/dist/lib: system.h

 Log Message:
 disable bogus decl of strcasecmp and strncasecmp

 gcc 15.1 treats conflicting prototypes as errors.

 texinfo's configure never checks whether strcasecmp and strncasecmp are
 declared.  Therefore the correct #defines never make it into config.h

 Just disable the declaration of the bogus prototypes.

 Seen on Manajaro Linux with gcc 15.1. Reported by Vasyl Maksym Lanko.

 PR toolchain/59440: tools build failures with gcc 15.1


 To generate a diff of this commit:
 cvs rdiff -u -r1.2 -r1.3 src/external/gpl2/texinfo/dist/lib/system.h

 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.

From: "Christoph Badura" <bad@netbsd.org>
To: gnats-bugs@gnats.NetBSD.org
Cc: 
Subject: PR/59440 CVS commit: src/external/gpl2/texinfo/dist/lib
Date: Fri, 23 May 2025 09:37:03 +0000

 Module Name:	src
 Committed By:	bad
 Date:		Fri May 23 09:37:03 UTC 2025

 Modified Files:
 	src/external/gpl2/texinfo/dist/lib: mkstemp.c

 Log Message:
 declare __gen_tempname with the correct prototype

 gcc 15.1 considers conflicting prototypes as errors.

 Seen on Manjaro Linux with gcc 15.1.  Reported by Vasyl Maksym Lanko.

 PR toolchain/59440: tools build failures with gcc 15.1


 To generate a diff of this commit:
 cvs rdiff -u -r1.1.1.1 -r1.2 src/external/gpl2/texinfo/dist/lib/mkstemp.c

 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.

>Unformatted:

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