[Bug fortran/50627] Error recovery: ICE in gfc_free_namespace after diagnosing missing end of construct

["mikael at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50627

Mikael Morin <mikael at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |mikael at gcc dot gnu.org

--- Comment #4 from Mikael Morin <mikael at gcc dot gnu.org> 2011-10-09 19:11:14 UTC ---
For the problem in comment #0:
As we parse select type, we create a new namespace.
The statement is (correctly) rejected, but we don't free the namespace.
Then we are back parsing module content, and the code doing that assumes that
gfc_current_namespace points to the module namespace, which is not the case
anymore (it points to the select namespace).

I assume that the problem in comment #3 is of the same kind: 
We parse some block content, encounter end of file, then are back at parsing
the main program unit with gfc_current_ns still pointing to the block
namespace.