2007-12-06 Robert Dewar <dewar@adacore.com>

	    Ed Schonberg  <schonberg@adacore.com>

	* exp_prag.adb (Expand_Pragma_Assert): Recognize new warning flag for
	assert fail

	* ug_words: Add entries for -gnatw.a -gnatw.A

	* sem_res.adb (Set_String_Literal_Subtype): If the context of the
	literal is a subtype with non-static constraints, use the base type of
	the context as the base of the string subtype, to prevent type
	mismatches in gigi.
	(Resolve_Actuals): If the actual is an entity name, generate a
	reference before the actual is resolved and expanded, to prevent
	spurious warnings on formals of enclosing protected operations.
	(Analyze_Overloaded_Selected_Component): If type of prefix if
	class-wide, use visible components of base type.
	(Resolve_Selected_Component): Ditto.
	(Resolve_Short_Circuit): Detect case of pragma Assert argument
	evaluating to False, and issue warning message.

	* usage.adb: Add lines for -gnatw.a and -gnatw.A



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@130838 138bc75d-0d04-0410-961f-82ee72b054a4

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