Added support for deprecated POSIX functions on Windows.
authorTamar Christina <tamar@zhox.com>
Thu, 1 Sep 2016 20:30:07 +0000 (21:30 +0100)
committerBen Gamari <ben@smart-cactus.org>
Mon, 5 Sep 2016 20:53:47 +0000 (16:53 -0400)
commit714779c7d175203b95e6442f01a4164bedf52e90
tree8b788344d829fb26acb8133beda772fb89912e02
parent2557d258033071482c37383ce54768101f801533
Added support for deprecated POSIX functions on Windows.

Summary:
With the introduction of 8.0.1 We've stopped supporting in GHCi
the use of POSIX functions under their deprecated names on Windows.

This to be compatible with object and libraries from the most
popular compilers on the platform (Microsoft and Intel compilers).

However this brings a confusing disparity between the compiled and
interpreted behavior since MingW-W64 does support the deprecated names.

Also It seems clear that package writers won't update their packages to
properly support Windows. As such I have added redirects in the RTS
for the deprecated functions as listed on

https://msdn.microsoft.com/en-us/library/ms235384.aspx.

This won't export the functions (as in, they won't be in the symbol table
of compiled code for the RTS.) but we inject them into the symbol table
of the dynamic linker at startup.

Test Plan:
./validate
and

make test TEST="ffi017 ffi021"

Reviewers: thomie, simonmar, RyanGlScott, bgamari, austin, hvr, erikd

Reviewed By: simonmar, bgamari

Subscribers: RyanGlScott, #ghc_windows_task_force

Differential Revision: https://phabricator.haskell.org/D2500

GHC Trac Issues: #12209, #12497, #12496

(cherry picked from commit e5ecb2010514405ac1b9b1285a8a65c00a5fd4e0)
docs/users_guide/8.0.2-notes.rst
libraries/base/System/Posix/Internals.hs
rts/Linker.c
rts/RtsSymbols.c
rts/RtsSymbols.h
testsuite/tests/rts/Makefile
testsuite/tests/rts/T12497.hs [new file with mode: 0644]
testsuite/tests/rts/T12497.stdout [new file with mode: 0644]
testsuite/tests/rts/all.T