Description of problem:
Can't compile testsuite because of -Werror=stringop-overflow error

Version-Release number of selected component (if applicable):
http-parser-2.8.0-2.el8

How reproducible:
Always

Steps to Reproduce:
1. rpm -i http-parser-2.8.0-2.el8.src.rpm
2. yum-builddep -y ~/rpmbuild/SPECS/*.spec
3. rpmbuild -bp ~/rpmbuild/SPECS/http-parser.spec
4. pushd ~/rpmbuild/BUILD/*
5. make test

Actual results:
make[1]: Entering directory '/tmp/tmp.zwJ0akD2W1/BUILD/http-parser-2.8.0'
cc  -I. -DHTTP_PARSER_STRICT=1  -Wall -Wextra -Werror -O0 -g  -c http_parser.c -o http_parser_g.o
cc  -I. -DHTTP_PARSER_STRICT=1  -Wall -Wextra -Werror -O0 -g  -c test.c -o test_g.o
cc -Wall -Wextra -Werror -O0 -g   http_parser_g.o test_g.o -o test_g
cc  -I. -DHTTP_PARSER_STRICT=0  -Wall -Wextra -Werror -O3  -c http_parser.c
cc  -I. -DHTTP_PARSER_STRICT=0  -Wall -Wextra -Werror -O3  -c test.c -o test.o
In function ‘strnlen’,
    inlined from ‘strlncat’ at test.c:1982:10,
    inlined from ‘strlcat’ at test.c:1999:10:
test.c:1967:7: error: ‘memchr’ specified size 18446744073709551615 exceeds maximum object size 9223372036854775807 [-Werror=stringop-overflow=]
   p = memchr(s, '\0', maxlen);
       ^~~~~~~~~~~~~~~~~~~~~~~
In function ‘strnlen’,
    inlined from ‘strlncpy’ at test.c:2008:10,
    inlined from ‘strlcpy’ at test.c:2023:10:
test.c:1967:7: error: ‘memchr’ specified size 18446744073709551615 exceeds maximum object size 9223372036854775807 [-Werror=stringop-overflow=]
   p = memchr(s, '\0', maxlen);
       ^~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
make[1]: *** [Makefile:92: test.o] Error 1
make[1]: Leaving directory '/tmp/tmp.zwJ0akD2W1/BUILD/http-parser-2.8.0'

Expected results:
Tests built, run and pass successfully

Additional info: