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[Ada] Undefined symbol when using -gnatVa


This patch modifies the generation of validity checks for the bounds of a
range to propagate the related subtype. This ensures the the same range will
produce the same temporaries to capture the bounds with and without validity
checks enabled. No small reproducer available.

Tested on x86_64-pc-linux-gnu, committed on trunk

2014-10-23  Hristian Kirtchev  <kirtchev@adacore.com>

	* checks.adb (Ensure_Valid): Update the subprogram
	profile. Propagate the contex attributes to Insert_Valid_Check.
	(Insert_Valid_Check): Update the subprogram profile. Propagate
	the attributes of the context to Duplicate_Subexpr_No_Checks.
	(Validity_Check_Range): Update the subprogram profile. Propagate
	the context attribute to Ensure_Valid.
	* checks.ads (Ensure_Valid): Update the subprogram profile
	along with the comment on usage.
	(Insert_Valid_Check): Update the subprogram profile along with the
	comment on usage.
	(Validity_Check_Range): Update the subprogram profile along with
	the comment on usage.
	* exp_util.adb (Build_Temporary): New routine.
	(Duplicate_Subexpr_No_Checks): Update the subprogram
	profile. Propagate the attributes of the context to Remove_Side_Effects.
	(Remove_Side_Effects): Update the subprogram profile. Update all calls
	to Make_Temporary to invoke Build_Temporary.
	* exp_util.ads (Duplicate_Subexpr_No_Checks): Update
	the subprogram profile along with the comment on usage.
	(Remove_Side_Effects): Update the subprogram profile along with
	the comment on usage.
	* sem_ch3.adb (Process_Range_Expr_In_Decl): Pass the subtype
	to the validity check machinery.  Explain the reason for this
	propagation.

Attachment: difs
Description: Text document


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