2011-08-03  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch6.adb: guard against error nodes in return statements.

2011-08-03  Arnaud Charlet  <charlet@adacore.com>

	* errout.adb (Error_Msg_Internal): the main unit has not been read yet,
	a warning can only appear on a configuration file, so emit warning
	without further checks.

2011-08-03  Arnaud Charlet  <charlet@adacore.com>

	* s-interr.ads: add overriding keyword.

2011-08-03  Geert Bosch  <bosch@adacore.com>

	* exp_attr.adb: Fix minor typo.

2011-08-03  Ed Schonberg  <schonberg@adacore.com>

	* par-ch4.adb: improve error recovery.

From-SVN: r177245