[patch, fortran] PR34559 - ICE on REPEAT with empty string literals

[Daniel Franke]

gcc/fortran:
2007-12-22  Daniel Franke  <franke.daniel@gmail.com>

	PR fortran/34559
	* simplify.c (gfc_simplify_repeat): Added safeguard for empty string
	literals.

gcc/testsuite:
2007-12-22  Daniel Franke  <franke.daniel@gmail.com>

	PR fortran/34559
	* gfortran.dg/repeat_6.f90: New test.


Regression tested on i686-pc-linux-gnu. 
Will commit as obvious after 24 hours if no one objects.

Regards
	Daniel
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