id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	os	architecture	failure	difficulty	testcase	blockedby	blocking	related
2658	Extreme memory usage (probably type functions)	guest	chak	"This is with the ghc 6.10.1 rc:

http://darcs.haskell.org/ghc-STABLE-2008-09-19-ghc-corelibs-testsuite.tar.bz2, unpacked, then ./darcs-all --extra get and  ./darcs-all pull -a

Then a perf build.

Then, wget http://hackage.haskell.org/packages/archive/sessions/2008.7.18/sessions-2008.7.18.tar.gz, unpack and cd sessions-2008.7.18

ghci-6.8.3 Tests/Tests.hs. This takes 40 seconds to get to the prompt and uses about 700MB memory.

ghci-6.10.0.20081004 Tests/Tests.hs. This has not finished type checking yet (well over 5 mins now - it exhaused my 4GB RAM and is now eating its way through 16GB of swap). top reports it's currently using about 5GB memory."	bug	closed	low	6.12.1	Compiler (Type checker)	6.9	invalid		matthew@…	Linux	x86_64 (amd64)		Unknown