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Option -ddump-rule-rewrites doesn't dump to a file

Running the command (using my GHC git HEAD compiler):

~/GHC/bin/ghc -v --make -dumpdir dumpopt/ -ddump-to-file -ddump-rule-rewrites -O1 --make mask-test.hs -o mask-test-opt

and the -ddump-rule-rewrites output still ends up on the console instead of the specified dumpdir.

Trac metadata
Trac field Value
Version 7.5
Type Bug
TypeOfFailure OtherFailure
Priority normal
Resolution Unresolved
Component Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system
Architecture
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