[Patch, AVR, 4.6+trunk]: PR44643 addendum

Georg-Johann Lay avr@gjlay.de
Thu Jun 30 10:28:00 GMT 2011

avr_insert_attributes uses TREE_READONLY on get readonlyness of node.

That does not work for C++ arrays: it gives false error
"variable must be const in order to be put into read-only section by
means of '__attribute__((progmem))'".

This patch peels arrays and uses TYPE_READONLY.

I did not open separate PR for this, tagged it as addendum to PR44643

Lightly tested on own code. There is no 'progmem' in testsuite, so
from testsuite's perspective that code is dead, anyway...


	PR target/44643
	* config/avr/avr.c (avr_insert_attributes): Use TYPE_READONLY
	instead of TREE_READONLY.
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