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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

Fix a type and a bug for PowerPC.

For Mac OS X, use the underlying Mach Microkernel calls instead of mmap.
Darwin's mmap doesn't honor the passed-in address without MAP_FIXED,
and MAP_FIXED replaces all existing mappings, so it can't be used.

Remove Win32 library dependency.

Put findLinkable in Finder.lhs, where it can be found in non-ghci stage1 compilers!

Import wibbles

Import wibbles

Reduce exports, and add comments

------------------------
	More dependency fiddling
	------------------------

	WARNING: Interface file format has changed (again)
		 You need to 'make clean' in all library code

* Orphan modules are now kept separately
  Home-package dependencies now contain only home-package dependencies!
  See HscTypes.Dependencies

* Linker now uses the dependencies to do dynamic linking

Result: Template Haskell should work even without --make (not yet tested)

We shouldn't be using MAP_FIXED on solaris (fixes last night's crash).

Unfortunately on Solaris the heuristics don't work too well.  Solaris
seems to ignore the addr argument to mmap when MAP_FIXED is not
specified, and starts handing out memory from the top of the address
space.  So we allocate 2M each time and munmap() ends to leave an
aligned 1M chunk.  This will eventually leave the address space
completely full of 1M holes.  I don't have a good solution to this at
the moment.

MERGE TO STABLE