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KNOWN_BUGS: remove two not-bugs

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- 11.7 signal-based resolver timeouts

Not considered a bug anymore but just implementation details. People
should avoid using timeouts with the synchronous name resolver.

- 11.16 libcurl uses renames instead of locking for atomic operations

Not a bug, just a description of how it works

Closes #11032
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Daniel Stenberg 2023-04-26 14:24:31 +02:00
parent 13718030ad
commit 442355f8db
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@ -75,8 +75,6 @@ problems may have been fixed or changed somewhat since this was written.
11.2 error buffer not set if connection to multiple addresses fails
11.4 HTTP test server 'connection-monitor' problems
11.5 Connection information when using TCP Fast Open
11.7 signal-based resolver timeouts
11.16 libcurl uses renames instead of locking for atomic operations
12. LDAP
12.1 OpenLDAP hangs after returning results
@ -453,27 +451,6 @@ problems may have been fixed or changed somewhat since this was written.
See https://github.com/curl/curl/issues/1332 and
https://github.com/curl/curl/issues/4296
11.7 signal-based resolver timeouts
libcurl built without an asynchronous resolver library uses alarm() to time
out DNS lookups. When a timeout occurs, this causes libcurl to jump from the
signal handler back into the library with a sigsetjmp, which effectively
causes libcurl to continue running within the signal handler. This is
non-portable and could cause problems on some platforms. A discussion on the
problem is available at https://curl.se/mail/lib-2008-09/0197.html
Also, alarm() provides timeout resolution only to the nearest second. alarm
ought to be replaced by setitimer on systems that support it.
11.16 libcurl uses renames instead of locking for atomic operations
For saving cookies, alt-svc and hsts files. This is bad when for example the
file is stored in a directory where the application has no write permission
but it has permission for the file.
https://github.com/curl/curl/issues/6882
https://github.com/curl/curl/pull/6884
12. LDAP
12.1 OpenLDAP hangs after returning results