#5285: Core lint error in T3001-2 [7.0 regression]
---------------------------------+------------------------------------------
Reporter: simonmar | Owner:
Type: bug | Status: new
Priority: highest | Milestone: 7.2.1
Component: Compiler | Version: 7.0.3
Keywords: | Testcase:
Blockedby: | Difficulty:
Os: Unknown/Multiple | Blocking:
Architecture: Unknown/Multiple | Failure: Compile-time crash
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`T3001-2(prof_hb)` is producing the following Core Lint failure:
{{{
=====> T3001-2(prof_hb) 4 of 5 [0, 0, 0]
cd . && '/64playpen/simonmar/nightly/HEAD-cam-04-unx/x86_64-unknown-
linux/inplace/bin/ghc-stage2' -fforce-recomp -dcore-lint -dcmm-lint -dno-
debug-output -no-user-package-conf -rtsopts -o T3001-2 T3001-2.hs -O
-prof -auto-all -package bytestring >T3001-2.comp.stderr 2>&1
Compile failed (status 256) errors were:
[1 of 1] Compiling Main ( T3001-2.hs, T3001-2.o )
T3001-2.hs:23:1:
Warning: In the use of `unsafePerformIO'
(imported from Foreign):
Deprecated: "Use System.IO.Unsafe.unsafePerformIO instead;
This function will be removed in the next release"
*** Core Lint errors : in result of Simplifier SimplMode {Phase = 0
[final],
inline,
rules,
eta-expand,
case-of-case}
max-iterations=4 ***
<no location info>:
[RHS of m'_s326 :: Main.Get [GHC.Types.Char]]
Demand type has 1 arguments, rhs has 0 arguments, m'_s326
Binder's strictness signature: DmdType Lm
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5285>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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