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warnings from Hugs

portability

conc040 is GHC-only (uses throwTo)

GHC-only tests:
	signals002	uses Handlers
	forkprocess01	forkProcess
	timeexts001	tests obsolete library
	net002		non-blocking I/O
	thurston-modular-arith	GHC-only scoped type variables

update Hugs output

add explicit import of Control.Monad.Fix

update output (though the alpha one looks out-of-date)

add Hugs output (different error messages, H98-style printing of Rationals)

catch other exceptions (e.g. overflow and pattern match failure), and
add take's to the tests for () -- GHC produces the wrong results for
enumFromThen () () and enumFromThenTo () () ().

catch other exceptions (e.g. overflow)

update output: GHC loses some output before an exception due to its
implementation of hPutStr.

update output to match H98

update output

add Hugs output (Hugs doesn't treat non-Latin digits as letters)

Update output

Hugs doesn't implement multiple-reader single-writer locking on files.

update Hugs output

update Hugs output

hGetBuf001 is GHC-only (uses throwTo for timeout)

another documented Hugs bug: tcfail030 (empty file)

Documented bugs in Hugs:

	mod154	module M where != module M(module M) where
	read023	Just.let x=id in x
	read033	1.0e+x
	read034	(3 + 4 +)
	read021	empty file
	tc084	monomorphism restriction and defaulting
	tc096	monomorphism restriction and defaulting

Also omitted tc144 for Hugs, because it loops.

these take too long under Hugs

Hugs produces slightly different output on these

Hugs versions of various error messages

config file for Hugs

tc168 is GHC-only (tests -ddump-types output)

conc013 is GHC-only (compares ThreadIds)

GHC's Show instance for Ratio is slightly different from Haskell 98

Accept output

Add comments

added more module tests from the Hugs testsuite, and merged mod200 into
mod154, which tests the same thing.

get hSetBinaryMode from System.IO

no longer needs -package lang

replace IOExts with hierarchical modules, and track changes in System.IO

Add a make variable COMPILER (default: ghc) to select a configuration file
from the config directory without have=ing to give a full path.

mark GHC-specific tests

mark the following failures as GHC-specific:
	ds052
	hReady001
	tc175
	tcfail080

mark groups of tests as GHC-only, as they test GHC-specific features.

Rename several .stderr files to .stderr-ghc, because in each case the
output consists of GHC-only warnings.

More compiler_type support: added the option functions

	omit_compiler_types(compilers)
			      skip this test for certain compilers
	only_compiler_types(compilers)
			      do this test for certain compilers only
	expect_fail_if_compiler_type(compiler)
			      expect failure from a certain compiler

and also use output files ending in -<compiler_type> if present.