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Comments

Comment fix

Update hi-boot files

----------------------------------
 Use the Infer/Check idea for typechecking higher-rank types
	----------------------------------

The main idea is that

	data Expected ty = Infer (TcRef ty) | Check ty

	tcMonoExpr :: Expr -> Expected TcRhoType -> TcM Expra


This "Expected" type tells tcMonoExpr whether it's doing inference or
checking.  It replaces the "HoleTv" flavour of type variable.

This actually leads to slightly more lines of code, but it's much
clearer, and the new type distinctions showed up several subtle bugs
in the previous implementation.  It all arose out of writing the
prototype implementation for the paper.

Error messages wibble around a little bit.  I'm not quite certain why!  But the
changes look like improvements to me.

Fix bug in forkProcess: it should be using RET_N rather than returing
directly.  Makes a difference for unregisterised only.

Remove dead code in atomicModifyMVarzh_fast.

Guidance about tags on windows

Remove -- option for HSTAGS for tags target, now that we are using hasktags instead

We support hs_init() and friends now, so remove the point that says we
don't.

Typo :-}

Unbreak 2nd stage: GHC.Posix => System.Posix.Internals

Fixed the -print arg to a $(FIND) command, so as to be more compatible
with shells.  :-)

Add -print to some $(FIND) commands, so as to be more compatible with
non-GNU finds.

The Id for a foreign import should be a LocalId, not a GlobalId.
Making it a GlobalId violates the invariant that all Ids defined in
the current module should be LocalIds until CoreTidy.

Add an ASSERT to confirm an invariant: all Ids defined in this module
should be LocalIds until the CoreTidy phase.

remove spurious backslash

More simplifier wibbles to do with the arity transfer stuff

Mac OS X/Darwin: Fix two more mangler bugs. Maybe the profiling libraries will work this time...

MERGE TO STABLE

Wibble to arity fix

A subtle type checker bug, which showed up in rebindable1 test

Handle Int literals in TH

----------------------------------
       Fix a long-standing eta-reduction bug
	----------------------------------

Consider the stupid definition

	f = \x -> f x

We were erroneously eta-reducing this to

	f = f

(unsound because they'd be distinguishable by `seq`)

The reason was that simplLazyBind was exposing the arity of
a recursive function to its own RHS, when all it was really
trying to do was expose the *rules* for the function.

Easily fixed.   This fixes some

	"Bad eta expand"

warnings.  Good all round.  In particular, fixes rn006.

comments

Comments

Two win32 wibbles

Document how to get rid of the console window

wibble

-------------------------------------
      Fix a functional-dependency-related bug in
		tcSimpifyRestricted
	-------------------------------------

	MERGE TO STABLE if it goes over conveniently
		(but I rather think it may not)

tcSimplifyRestricted works by (a) simplifying brutall to find out
what the constrained type variables are, and (b) simplifying more
gently, knowing the constrained type varaibles.  The bug is that
in step (b) we were not doing the check-for-improvement-and-loop
part, thinking that step (a) had alrady done all the improvement.
But not so, as an example in the code now shows.

Simple to fix.  I rather think we could tidy up these various loops.

Comments

if needs be, include Capability.h

resumeThread: concCall arg is universally unused (but leave it in for now)

UPD_IND_NOLOCK(): update THREADED_RTS & SMP versions wrt rts/Storage.h:updateWithIndirection() change

----------------------------------
   Try swapping order of inference for applications
	----------------------------------

For a long time we've inferred the argument types of a function
call before using information from the expected type passed in.
This commit swaps the order.  See comments with tcApp for an
example where this makes a real difference.

I don't think any error messages get signficantly worse, but yell
if you find any.

Better error messages

ToDo comments

Improve error messages on newtype deriving

Fix unbox-strict-fields deriving bug; MERGE TO STABLE

Typecheck type reification brackets [t| ... |]

Missing commit from last night: Add GreenCard files, GreenCard derived files, etc. to the lists of sources so that make depend and make clean work

threadStackOverflow() wibble