[Patch, fortran] PR28735 - Crash in resolve.c - related to contents of .mod

[Paul Thomas]

:ADDPATCH fortran:

This patch fixes a problem, in which the dummies of a public function 
that are private in one module but made public in another, caused a seg 
fault because resolve_variable went of to resolve references before 
checking that there was a symtree entry.  The reporter proposed a patch 
that added an extra check for the symtree but nothing is lost by 
inverting the order of the original check and the the reference 
resolution.  The testcase is a straightforward reduction of the original 
in the PR.

Regtested on SUSE10.1/amd64 - OK for trunk and 4.1?

Paul

2006-08-18  Paul Thomas  <pault@gcc.gnu.org>

    PR fortran/28735
    * resolve.c (resolve_variable): Check for a symtree before
    resolving references.

2006-08-18  Paul Thomas  <pault@gcc.gnu.org>

    PR fortran/28735
    * gfortran.dg/module_private_array_refs_1.f90: New test.

 
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