[Patch, fortran, obvious] PR fortran/50129 gfc_enforce_clean_symbol_state ICE after rejecting an ELSEWHERE statement

[Mikael Morin]

Hello, 

I'm going to commit the following (to trunk and 4.6) once the regression test 
finishes.

Mikael
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2011-08-19  Mikael Morin  <mikael.morin@sfr.fr>

	PR fortran/50129
	* parse.c (parse_where): Undo changes after emitting an error. 

2011-08-19  Mikael Morin  <mikael.morin@sfr.fr>

	PR fortran/50129
	* where_3.f90: New test.

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