GCC 14 newly by default treats as errors a number of situations which
before were only warnings.  For more information see
https://gcc.gnu.org/gcc-14/porting_to.html and meta bug #1220571.

Because of this, package liblogging fails to compile.  This can be seen online
at:
https://build.opensuse.org/package/live_build_log/openSUSE:Factory:Staging:Gcc7/liblogging/standard/x86_64

It can be reproduced locally with command: osc build --clean
--alternative-project home:rguenther:nextgcc

The corresponding Gentoo bug seems to be:
https://bugs.gentoo.org/926515

The (first) error (that halts the build) is:

[   10s] beepframe.c:170:1: error: return type defaults to ‘int’ [-Wimplicit-int]
[   10s]   170 | sbFramActualRecvFramCommonBody(sbFramObj* pThis,sbChanObj *pChan)
[   10s]       | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[   10s] beepmessage.c: In function ‘sbMIMEExtract’:
[   10s] beepmessage.c:140:15: warning: variable ‘pHdr’ set but not used [-Wunused-but-set-variable]
[   10s]   140 |         char* pHdr;
[   10s]       |               ^~~~