The resolve call is done with the right port number, but the subsequent
check used the wrong one, which then could find a previous resolve which
would return and leave the fresh resolve "incomplete" and leaking
memory.

Fixes #6247

... so don't define it when instructed to use c-ares!

As the asynch nature of it may trigger events in another order. A c-ares
upgrade made it break.

Reported-by: Marc Hörsken
Fixes #6247

... also added to the docs.

Commit 3b80d3ca (June 2017) introduced getinfo replacement
variables that use curl_off_t instead of doubles. Switch the --write-out
function over to use them.

Closes #6248

file_disconnect() is identical with file_do() except the function header
but as the arguments are unused anyway so why not just return file_do()
directly!

Reviewed-by: Daniel Stenberg
Closes #6249

Update a few format specifiers to match what is being printed.

Closes #6241

The function has been removed from common usage. Also removed comment in
gopher.c that still referenced it.

Reported-by: Rikard Falkeborn
Fixes #6242
Closes #6243

Add files that are generated by 'make examples' and remove some that
have been renamed.

The commits that renamed the programs are e9625c5b (imap.c and
simplesmtp.c were renamed to imap-fetch.c and smtp-send.c) and
ad39e7ec (pop3slist.c and pop3s.c were renamed to pop3-list.c and
pop3-ssl.c).

Closes #6240

To reduce use of types that can't be checked at compile time. Also
removes several typecasts.

... and rename the struct field from 'os_specific' to 'tdata'.

Closes #6239
Reviewed-by: Jay Satiro

It requires the linker to support the `-municode` option.
This is available in more recent mingw-w64 releases.

Ref: https://gcc.gnu.org/onlinedocs/gcc/x86-Windows-Options.html
Ref: https://stackoverflow.com/questions/3571250/wwinmain-unicode-and-mingw/11706847#11706847

Reviewed-by: Jay Satiro
Reviewed-by: Marcel Raad

Closes #6228

... to avoid the use of 'void *' for the protocol specific structs done
per transfer.

Closes #6238

Reduce risk for conflicting docs and makes it to a single place to fix
and polish.

add these missing options to the readme:

ENABLE_OPENSSL_AUTO_LOAD_CONFIG and ENABLE_UNICODE

clarify ENABLE_SCHANNEL default varies

Fixes #6216
Closes #6227
Co-Authored-by: Jay Satiro

Closes #6235

Closes #5839

Closes #6132
Closes #6133

Changes are mainly reordering and adding of includes required
to compile with a more recent version of GCC.

Closes #6220

Make sure uploaded file is no longer locked after the
transfer while waiting for the final ACK to be handled.

Assisted-by: Daniel Stenberg

Bug: #6058
Closes #6209

The OpenSSH server instance for the testsuite cannot
be started on FreeBSD, therefore the SFTP and SCP
tests are disabled right away from the beginning.

The previous OS version specific logic for SKIP_TESTS
is no longer needed/used and can therefore be removed.

Reviewed-by: Daniel Stenberg

Follow up to #6211
Closes #6229

Add Daniel Hwang to the mailmap to cover the alternative spelling
Daniel Lee Hwang which was used in one commit.

Closes #6230
Reviewed-by: Daniel Stenberg <daniel@haxx.se>

EVP_MD_CTX_create will allocate memory for the context and returns
NULL in case the allocation fails. Make sure to catch any allocation
failures and exit early if so.

In passing, also move to EVP_DigestInit rather than EVP_DigestInit_ex
as the latter is intended for ENGINE selection which we don't do.

Closes #6224
Reviewed-by: Daniel Stenberg <daniel@haxx.se>
Reviewed-by: Emil Engler <me@emilengler.com>

Reviewed-by: Marcel Raad
Closes #6215

By differentiating between ON and AUTO it can make a missing zlib
library a hard error when CURL_ZLIB=ON is used.

Reviewed-by: Jakub Zakrzewski
Closes #6221
Fixes #6173

For thread-safety

Closes #6223

Closes #6214

Closes #6178

Closes #6173

Closes #6169

Closes #6167

Closes #6166

Closes #6165

Closes #6219

Closes #6211

Make sure the log file is not locked once a test has
finished and align with the behavior of our logmsg.

Rename curl_test_data.py to be a general util.py.
Format and sort Python imports with isort/VSCode.

Bug: #6058
Closes #6206

Closes #6205

... as there's no good reason to error out completely.

Reported-by: Andreas Fischer
Fixes #6200
Closes #6201

Proposed-by: Jeroen Ooms
Ref: #6186
Closes #6188