Bug 879647

Summary:	app-text/mandoc: possible configure breakage with Clang 16
Product:	Gentoo Linux	Reporter:	Matt Jolly <kangie>
Component:	Current packages	Assignee:	Gentoo's Team for Core System packages <base-system>
Status:	CONFIRMED ---
Severity:	normal	CC:	arsen
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	All
Whiteboard:
Package list:		Runtime testing required:	---
Bug Depends on:
Bug Blocks:	906027
Attachments:	clang-14.log clang-15.log clang.diff

Description Matt Jolly gentoo-dev

2022-11-04 22:08:11 UTC

This package has been identified via automation as potentially impacted by upcoming Clang 16 changes.
The following have been identified as potential issues:

[-Werror,-Wimplicit-function-declaration]

[-Werror,-Wimplicit-function-declaration]
error: call to undeclared function 'getprogname'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]
error: call to undeclared function 'pledge'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]
error: call to undeclared function 'recallocarray'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]
error: call to undeclared function 'strcasestr'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]
error: call to undeclared function 'strptime'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]
error: call to undeclared function 'strtonum'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]
error: call to undeclared function 'vasprintf'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]
error: call to undeclared function 'wcwidth'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]
error: call to undeclared library function 'strlcat' with type 'unsigned long (char *, const char *, unsigned long)'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]
error: call to undeclared library function 'strlcpy' with type 'unsigned long (char *, const char *, unsigned long)'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]

Comment 1 Matt Jolly gentoo-dev

2022-11-04 22:08:12 UTC

Created attachment 827195 [details]
clang-14.log

build log

Comment 2 Matt Jolly gentoo-dev

2022-11-04 22:08:15 UTC

Created attachment 827197 [details]
clang-15.log

build log

Comment 3 Matt Jolly gentoo-dev

2022-11-04 22:08:17 UTC

Created attachment 827199 [details]
clang.diff

build log

Comment 4 Arsen Arsenović gentoo-dev

2022-11-06 09:52:44 UTC

Ok, I took a look at this and I think it's a red herring.  The hand-rolled configure script rechecks for all of these functions with appropriate defines set to make them declared (of course, functions that indeed do not exist, like the strl*, do not get detected the second time either).