Change #255442

Comments

msvc: drop exception, make `BIT()` a bitfield with Visual Studio
Add casts to `bool`, or use `bit` type in local variables, where
neccessary to avoid MSVC compiler warnings C4242.

Note: There may remain places needing the above updates, where not
tested in CI, and missed in manual review.

Also:
- urldata: convert struct field `connect_only` to bitfield to match its
  counterpart in another struct.
- rename curl-specific `bit` type to `curl_bit`.

Closes #20142

Changed files

• lib/asyn-thrdd.c
• lib/cf-ip-happy.c
• lib/cf-socket.c
• lib/cfilters.c
• lib/connect.c
• lib/cookie.c
• lib/cshutdn.c
• lib/curl_sasl.c
• lib/curl_setup_once.h
• lib/cw-out.c
• lib/ftp.c
• lib/http.c
• lib/http2.c
• lib/http_chunks.c
• lib/http_proxy.c
• lib/imap.c
• lib/mime.c
• lib/multi.c
• lib/pop3.c
• lib/ratelimit.c
• lib/sendf.c
• lib/smtp.c
• lib/socks.c
• lib/url.c
• lib/urldata.h
• lib/vquic/curl_ngtcp2.c
• lib/vtls/openssl.c
• lib/vtls/rustls.c
• lib/vtls/vtls.c
• lib/ws.c
• src/tool_cb_wrt.c
• src/tool_operate.c