PR middle-end/92333 - missing variable name referencing VLA in warnings

PR middle-end/92333 - missing variable name referencing VLA in warnings

PR middle-end/92333 - missing variable name referencing VLA in warnings
PR middle-end/82608 - missing -Warray-bounds on an out-of-bounds VLA index

gcc/testsuite/ChangeLog:

	PR middle-end/92333
	PR middle-end/82608
	* gcc.dg/Warray-bounds-51.c: New test.

gcc/ChangeLog:

	PR middle-end/92333
	PR middle-end/82608
	* tree-vrp.c (vrp_prop::check_array_ref): Handle VLAs with constant
	size.
	* tree-ssa-ccp.c (fold_builtin_alloca_with_align): Use a meaninful
	name and location for a temporary variable.

From-SVN: r277854