GitLab

Changed implementation of representation of negation to use function
application instead of a special syntactic form as suggested by SPJ.

Some documentation covering the extra desugaring that is needed for Template
Haskell.

--------------------------------
	Expression simplification for TH
	--------------------------------

Simplify expressions without any inlining in SimplCore.simplifyExpr.

simplifyExpr is used to simplify a TH splice before running the code,
and simplifyExpr was using (SimplPhase 0) which allows inlining.
Unfortunately, when -O is on (which can happen when compiling a program
with some splices with -O) some inlining can happen which then confuses
the byte-code generator.  (Unboxed tuples.)

Wibbles

oops, should really check for .hi-boot-<version> before .hi-boot

------------------
  	   More TH stuff (thanks to Ian L)
		------------------

* Make TH Literals have an Integer not an Int
* Desguar TH 'foreign import' a bit better
* Minor documentation changes

Put a "warning:" prefix on a DEBUG belch msg to make it clearer that
this isn't an error.

------------------
	Fix an obscure bug in implicit parameters,
	interacting with lazy pattern matching
		------------------

		MERGE TO STABLE BRANCH

The problem was this:

  data UniqueSupply = US Integer

  newUnique :: (?uniqueSupply :: UniqueSupply) => Integer
  newUnique = r
            where US r = ?uniqueSupply

The lazy pattern match in the where clause killed GHC 5.04 because the
SourceType {?uniqueSupply::UniqueSupply} of the RHS of the 'where' didn't
look like a UniqueSupply.

The fix is simple: in DsUtils.mkSelectorBinds, use the pattern, not
the rhs, to get the type reqd.  More efficient too.

Test is typecheck/should_compile/tc164.hs

------------------
		Template Haskell stuff
		------------------

a) Pretty printer for TH (thanks to Ian Lynagh)

b) A declaration quote has type Q [Dec], not [Q Dec] as in
   the paper

c) Foreign imports are part of THSyntax, and can be spliced in

More wibbles to do with export lists

Dont bail out quite so fast

Add the appropriate barf for memory allocation failures on Mac OS X.

Formatting and dead code

------------------
		Fix module exports
		------------------

GHC was doing the wrong thing when it came to detecting conflicts
on exports from 'module M' items.  This commit fixes it.

There's a test in rename/should_fail/rnfail040

Better reporting of unused bindings

More wibbles: move the out of memory error message into my_mmap() to
avoid duplication, and add a couple of ToDo comments.

Wibble in "out of memory" error message (we actually get to see it
now, rather than "getMBlock: misaligned block...").

Wibble when renaming splices

Fix reifyDecl

warning police: #include <string.h> to get proto for strlen()

total_alloc should be a 64-bit couunter.

MERGE TO STABLE

Fix the heapCensus crash.

It turned out that after a GC, the small_alloc_list might be non-empty
if a new finalizer thread had been started.  The last block on
small_alloc_list doesn't have the free pointer set correctly (as a
small optimisation, we don't normally set the free pointer after each
allocation, only when the block is full).  The result was that the
free pointer contains the wrong value, and the heap census traverses
garbage.  The fix is to set the free pointer correctly before
traversing small_alloc_list.

The bug doesn't show up when DEBUG is on, because extra DEBUG checks
cause the free pointer to be initialised to a sensible(-ish) value.
Hence my difficulty in reproducing the bug.

To reproduce: compile ghc-regress/lib/should_run/memo002 with
profiling and run it with a sufficiently small sample interval (-i0.02
did it for me).

Thanks to the kind folks at ARM for helping out with the debugging of
this one.

MERGE TO STABLE

Print implicit types and bindings in External Core

Finish TH exprs with type sigs

Add string/rational literals, and e::t form to TH

Remove CrossStage from Convert

Fix an obscure record-selector-in-newtype bug

Added support for negation to THSyntax and DsMeta.repE.

Oops... add missing free-vars

err msg wibble

Add a note about where the time spent in foreign code is attributed.

Cleaned up `repE'.  Reordered to match order of cases in HsExpr and made an
effort to catch all cases.

Wibble to lint-ing unfoldings

Added a case for HsPar to repE.  Also completed the cases in repE to at
least panic for the missing syntactic forms of HsExpr.

Is there any good reason for the semi-random order of the cases in repE?
Using the same order as in the data declaration for HsExpr would make it
easier to spot missing cases.

Slight tidy up

Make imports work for pre-504

Remove unnecessary compiler and linker flags for Mingw32.

Track locations for binders better (fixes several rn and mod failures)

Use getExecDir, just like in ghc-pkg and SysTools

Fix bogon in linker