[patch, fortran] PR31306 ICE with implicit character variables

[Jerry DeLisle]

:ADDPATCH fortran:

Hi all,

The attached patch fixes this ICE by checking for a conflicting attribute in the 
function argument to LEN().  There may be additional checks that could be added 
here, but for now this resolves the segmentation fault.

Regression tested on x86-64-Gnu-linux.

New test case provided.

OK for trunk?

Regards,

Jerry

2007-10-19  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR fortran/31306
	* decl.c (char_len_param_value): Add check for conflicting attributes of
	function argument.


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