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  • #16113

Closed
Open
Created Dec 30, 2018 by Ben Gamari@bgamari🐢Maintainer

T14740 fails in debugged compiler

--- parser/should_fail/T14740.run/T14740.stderr.normalised	2018-12-30 16:06:27.120170052 +0000
+++ parser/should_fail/T14740.run/T14740.comp.stderr.normalised	2018-12-30 16:06:27.120170052 +0000
@@ -1,4 +1,5 @@
+ghc: panic! (the 'impossible' happened)
+  (GHC version 8.7.20181230 for x86_64-unknown-linux):
+	ASSERT failed! file compiler/types/TyCoRep.hs, line 911
 
-T14740.hs:5:7:
-     Expecting a lifted type, but ‘(# #)’ is unlifted
-     In the type signature: x :: ((# #)) => ()
+Please report this as a GHC bug:  https://www.haskell.org/ghc/reportabug
Trac metadata
Trac field Value
Version 8.6.3
Type Bug
TypeOfFailure OtherFailure
Priority high
Resolution Unresolved
Component Compiler (Type checker)
Test case
Differential revisions
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CC goldfire, simonpj
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