Snippets for grep 3.12 from Fedora s390x

Sourced from https://kojipkgs.fedoraproject.org/packages/grep/3.12/3.fc44/data/logs/s390x/build.log.

• dfa.c:4059:19: warning: initialization discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
   4059 |       char *rcp = strchr (right, *lcp);
        |                   ^~~~~~
  

• memchr2.c:58:12: warning: return discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
     58 |     return memchr (s, c1, n);
        |            ^~~~~~
  

• ../lib/dfa.c:2606:12: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
   2606 |   flags[0] |= OPT_QUEUED;
        |            ^
  

• test-memchr.c:34:10: warning: return discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
     34 |   return memchr (s, c, n);
        |          ^~~~~~
  

• test-wmemchr.c:30:10: warning: return discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
     30 |   return wmemchr (s, wc, n);
        |          ^~~~~~~