ghc -O generates faulty c code
I have the following file:
Bug.hs
--------------------------
module Bug where
foo :: Double -> Double
foo x = x - (-1.0)
--------------------------
> ghc -c -O Bug.hs
/tmp/ghc25320.hc: In function `s3Ny_ret':
/tmp/ghc25320.hc:14: invalid lvalue in decrement
/tmp/ghc25320.hc:14: parse error before `1.0'
Cause
-----
The problem is the following generated c snippet
_s3Nx_=PK_DBL((W_*)(R1.p+1))--1.0;
The two consecutive minuses should be separated by a
space.
Ulf Norell
ulfn@cs.chalmers.se
Trac metadata
Trac field |
Value |
Version |
5.04 |
Type |
Bug |
TypeOfFailure |
OtherFailure |
Priority |
normal |
Resolution |
ResolvedDuplicate |
Component |
Compiler |
Test case |
|
Differential revisions |
|
BlockedBy |
|
Related |
|
Blocking |
|
CC |
|
Operating system |
|
Architecture |
|