CGEN RFA/PATCH: gas/cgen.c, longjmp crash protection

[Nick Clifton]

Hi Frank,

: 2000-06-23  Frank Ch. Eigler  <fche@redhat.com>
:  
: 	* cgen.c (expr_jmp_buf_p): New validity flag for expr_jmp_buf.
: 	(gas_cgen_parse_operand): Set it around expression() call.
: 	(gas_cgen_md_operand): Test for it before longjmp().

Approved.

Cheers
	Nick