Panic Simplifier ticks exhausted with type families
I've tried to compile my vinyl-like records with 7.10.2-rc1 and got:
ghc: panic! (the 'impossible' happened)
(GHC version 7.10.1.20150612 for x86_64-unknown-linux):
Simplifier ticks exhausted
When trying RuleFired Class op rreplace
To increase the limit, use -fsimpl-tick-factor=N (default 100)
If you need to do this, let GHC HQ know, and what factor you needed
To see detailed counts use -ddump-simpl-stats
Total ticks: 225484
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
Attached self contained test compiles with 7.10.1, but fails with 7.10.2-rc1 when compiled with optimizations.
Trac metadata
Trac field | Value |
---|---|
Version | 7.10.1-rc1 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | |
Architecture |