Dear maintainer(s),

hexcurse fails to build from source with glibc 2.43, currently in
experimental. From the build log:

| gcc -DHAVE_CONFIG_H -I. -I..  -I../include -Wall -Werror -Wextra -Wdate-time -D_FORTIFY_SOURCE=2  -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/hexcurse-1.60.0=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -c -o color.o color.c
| getopt.c: In function ‘_getopt_internal’:
| getopt.c:361:18: error: initialization discards ‘const’ qualifier from pointer target type [-Werror=discarded-qualifiers]
|   361 |     char *temp = my_index (optstring, c);
|       |                  ^~~~~~~~
| cc1: all warnings being treated as errors
| make[3]: *** [Makefile:378: getopt.o] Error 1
| make[3]: *** Waiting for unfinished jobs....
| make[3]: Leaving directory '/build/reproducible-path/hexcurse-1.60.0/src'
| make[2]: *** [Makefile:370: all-recursive] Error 1
| make[2]: Leaving directory '/build/reproducible-path/hexcurse-1.60.0'
| make[1]: *** [Makefile:311: all] Error 2
| make[1]: Leaving directory '/build/reproducible-path/hexcurse-1.60.0'
| dh_auto_build: error: make -j128 returned exit code 2
| make: *** [debian/rules:6: binary] Error 25
| dpkg-buildpackage: error: debian/rules binary subprocess failed with exit status 2

The full build log is available here [1].

The issue is due to ISO C23 declaration of bsearch, memchr, strchr,
strpbrk, strrchr, strstr, wcschr, wcspbrk, wcsrchr, wcsstr and wmemchr,
which now returns a pointer to a const-qualified type when the input
argument is a pointer to a const-qualified type [2].

I would like to thanks Emanuele Rocca for doing the archive rebuild on
a fast arm64 server.

Regards
Aurelien

[1] https://people.debian.org/~ema/glibc-2.43-rebuilds/output-1/hexcurse_arm64.build
[2] https://sourceware.org/git/?p=glibc.git;a=blob;f=NEWS;h=e271fb2e4d76903c77a302aaec1ca22ce31027d0;hb=f762ccf84f122d1354f103a151cba8bde797d521#l19