gcc/ChangeLog:

	PR tree-optimization/78775
	* builtins.c (get_size_range): Move...
	* calls.c: ...to here.
	(alloc_max_size): Accept zero argument.
	(operand_signed_p): Remove.
	(maybe_warn_alloc_args_overflow): Call get_size_range.
	* calls.h (get_size_range): Declare.

gcc/testsuite/ChangeLog:

	PR tree-optimization/78775
	* gcc.dg/attr-alloc_size-4.c: Add test cases.
	* gcc.dg/attr-alloc_size-10.c: New test.
	* gcc.dg/attr-alloc_size-11.c: New test.
	* gcc.dg/builtin-stringop-chk-7.c: New test.
	* gcc.dg/pr78775.c: New test.
	* gcc.dg/pr78973-2.c: New test.
	* gcc.dg/pr78973.c: New test.

From-SVN: r244290