[ ghc-Bugs-1008664 ] new C preprocessor breaks ghc's build process

Bugs item #1008664, was opened at 2004-08-13 05:37
Message generated for change (Tracker Item Submitted) made by Item Submitter
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=108032&aid=1008664&group_id=8032

Category: libraries/base
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: new C preprocessor breaks ghc's build process

Initial Comment:
bash-2.03$ cat old
infix 5 \

bash-2.03$ cat -vet old
infix 5 \ $
$
bash-2.03$ cat new
infix 5 \ --

bash-2.03$ cpp-2.95 old
# 1 "old"
infix 5 \

bash-2.03$ cpp-2.95 new
# 1 "new"
infix 5 \ --

bash-2.03$ cpp-3.4.1 old
# 1 "old"
# 1 "<built-in>"
# 1 "<command line>"
# 1 "old"
old:1:10: warning: backslash and newline separated by
space
infix 5 bash-2.03$ cpp-3.4.1 new
# 1 "new"
# 1 "<built-in>"
# 1 "<command line>"
# 1 "new"
infix 5 \ --
bash-2.03$

The new behavior is documented in cpp.info of the
gcc-3.4.1 distribution.
Line 212 of ghc-6.2.1/libraries/base/Data/List.hs
expects the old behavior.

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=108032&aid=1008664&group_id=8032