[4.5/4.6 Regression] ICE: segmentation fault in mio_expr

[Paul Richard Thomas <paul dot richard dot thomas at gmail dot com>]

We are not entirely certain when this regression crept in.
Nonetheless, the fix is relatively straightforward and is sufficiently
described by the ChangeLog entries.  The testcase is that of comment
#3 in the PR.

I have added the fix for PR43266, which was posted on 23 March.  This
is obvious.

Bootstrapped and regtested on FC9/x86_64 and RHEL5.4/i686 - OK for
trunk and a bit later 4.5?

Paul

2010-04-20  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/43227
	* resolve.c (resolve_fl_derived): If a component character
	length has not been resolved, do so now.
	(resolve_symbol): The same as above for a symbol character
	length.
	* trans-decl.c (gfc_create_module_variable): A 'length' decl is
	not needed for a character valued, procedure pointer.

	PR fortran/43266
	* resolve.c (ensure_not_abstract_walker): If 'overriding' is
	not found, return FAILURE rather than ICEing.

2010-04-20  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/43227
	* gfortran.dg/proc_decl_23.f90: New test.

	PR fortran/43266
	* gfortran.dg/abstract_type_6.f03: New test.

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