Incorrect return types for recv() and send() on Windows
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. The problem is in blockingReadRawBufferPtr and blockingWriteRawBufferPtr in GHC.IO.FD which are only called in the threaded RTS.
See also note CSsize in System.Posix.Internals.
I have a patch and a test incoming.
Trac metadata
| Trac field | Value |
|---|---|
| Version | |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Core Libraries |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | ekmett |
| Operating system | |
| Architecture |