configure --enable-debug now enables -Wassign-enum with clang,
identifying several enum "abuses" also fixed.
Reported-by: Gisle Vanem
Bug: 879007f811 (commitcomment-42087553)Closes#5929
With the `isdigit` implementation that comes with MSYS2, the argument
is used as an array subscript, resulting in a -Wchar-subscripts
warning. `isdigit`'s behavior is undefined if the argument is negative
and not EOF [0]. As done in lib/curl_ctype.h, cast the `char` variable
to `unsigned char` to avoid that.
[0] https://en.cppreference.com/w/c/string/byte/isdigit
Closes https://github.com/curl/curl/pull/4503
This warning used to be enabled only for clang as it's a bit stricter
on GCC. Silence the remaining occurrences and enable it on GCC too.
Closes https://github.com/curl/curl/pull/2747
./sslbackend.c:58:3: warning: else after closing brace on same line (BRACEELSE)
} else if(isdigit(*name)) {
^
./sslbackend.c:62:3: warning: else after closing brace on same line (BRACEELSE)
} else
^
