Use the correct return type for Windows' send()/recv() (Fix Trac #12010)
They return signed 32 bit ints on Windows, even on a 64 bit OS, rather than
Linux's 64 bit ssize_t. This means when recv() returned -1 to signal an error we
thought it was 4294967295. It was converted to an int, -1 and the buffer was
memcpy'd which caused a segfault. Other bad stuff happened with send()s.
See also note CSsize in System.Posix.Internals.
Add a test for Trac #12010
- GHC testsuite (T12010)
- http-conduit test (https://github.com/snoyberg/http-client/issues/191)
Reviewers: austin, hvr, bgamari, Phyx
Reviewed By: Phyx
Differential Revision: https://phabricator.haskell.org/D2170
GHC Trac Issues: Trac #12010