openvas fails to compile on clang 15+

[igalic]

despite fixes in #1025 clang 15+ still reports issues. this was originally reported as: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=270464

Expected behavior

Build succeeds

Actual behavior

build fails:

misc/CMakeFiles/openvas_misc_shared.dir/plugutils.c.o -MF misc/CMakeFiles/openvas_misc_shared.dir/plugutils.c.o.d -o misc/CMakeFiles/openvas_misc_shared.dir/plugutils.c.o -c /wrkdirs/usr/ports/security/openvas/work/openvas-scanner-22.4.0/misc/plugutils.c
/wrkdirs/usr/ports/security/openvas/work/openvas-scanner-22.4.0/misc/plugutils.c:841:22: error: a function declaration without a prototype is deprecated in all versions of C [-Werror,-Wstrict-prototypes]
plug_get_key_sigchld ()
                     ^
                      void
1 error generated. 

Steps to reproduce

1. install llvm 15+
2. attempt to build
3. build fails

Environment

Operating system:

see https://portsfallout.com/fallout?port=security%2Fopenvas%24 for all the FreeBSD versions where this fails

[igalic]

thanks!

[jjnicola]

thanks!

Thank you for reporting.
Regards.