We need to keep the gcno files, because they are created at compile time.

teor authored 5 years ago and Nick Mathewson committed 5 years ago

Fixes bug 29959; bugfix on 0.4.0.2-alpha.

getpid() can be really expensive sometimes, and it can fail to
detect some kind of fork+prng mistakes, so we need to avoid it if
it's safe to do so.

This patch might slow down fast_prng a lot on any old operating
system that lacks a way to prevent ram from being inherited, AND
requires a syscall for any getpid() calls.  But it should make sure
that we either crash or continue safely on incorrect fork+prng usage
elsewhere in the future.

Previously we did this for tests only, but it's valuable for getting
proper fork behavior in rand_fast.

This will cause the child process to construct a new one in a nice
safe way.

Closes ticket 29668; bug not in any released Tor.

Closes ticket 29357, and comes with appropriate notions of caution.

When classifying a client's selection of TLS ciphers, if the client
ciphers are not yet available, do not cache the result. Previously,
we had cached the unavailability of the cipher list and never looked
again, which in turn led us to assume that the client only supported
the ancient V1 link protocol.  This, in turn, was causing Stem
integration tests to stall in some cases.  Fixes bug 30021; bugfix
on 0.2.4.8-alpha.