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 $PKG fails to compile.  This can be seen online
at:
https://build.opensuse.org/package/live_build_log/openSUSE:Factory:Staging:Gcc7/libgnomesu/standard/x86_64

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


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

[   20s] xmalloc.c:61:7: error: conflicting types for ‘rpl_realloc’; have ‘void
*(char *, size_t)’ {aka ‘void *(char *, long unsigned int)’}
[   20s]    61 | void *rpl_realloc (char *p, size_t n);
[   20s]       |       ^~~~~~~~~~~
[   20s] <command-line>: note: previous declaration of ‘rpl_realloc’ with type
‘void *(void *, size_t)’ {aka ‘void *(void *, long unsigned int)’}