2016-06-22 Justin Squirek <squirek@adacore.com>

	* sem_ch8.adb (Push_Scope): Add a check for when the
	scope table is empty to assign the global variable
	Configuration_Component_Alignment.
	* sem.adb (Do_Analyze): Add Configuration_Component_Alignment
	to be assigned when the environment is cleaned instead of the
	default.
	* sem.ads Add a global variable Configuration_Component_Alignment
	to store the value given by pragma Component_Alignment in the
	context of a configuration file.
	* sem_prag.adb (Analyze_Pragma): Correct the case for
	Component_Alignment so that the pragma is verified and add
	comments to explain how it is applied to the scope stack.

2016-06-22  Justin Squirek  <squirek@adacore.com>

	* sprint.adb (Sprint_Node_Actual): Add check in
	the case of an N_Object_Declaration when evaluating an expression
	to properly ignore errors.



git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@237694 138bc75d-0d04-0410-961f-82ee72b054a4

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