gcc/c-family/ChangeLog:

	PR c/82063
	* c.opt (-Wno-alloc-size-larger-than): New option.
	* doc/invoke.texi (-Walloc-size-larger-than): Update.

gcc/ChangeLog:

	PR c/82063
	* calls.c (alloc_max_size): Correct a logic error/typo.
	Treat excessive arguments as infinite.  Warn for invalid arguments.

gcc/testsuite/ChangeLog:

	PR c/82063
	* gcc.dg/Walloc-size-larger-than-1.c: New test.
	* gcc.dg/Walloc-size-larger-than-10.c: New test.
	* gcc.dg/Walloc-size-larger-than-11.c: New test.
	* gcc.dg/Walloc-size-larger-than-12.c: New test.
	* gcc.dg/Walloc-size-larger-than-13.c: New test.
	* gcc.dg/Walloc-size-larger-than-14.c: New test.
	* gcc.dg/Walloc-size-larger-than-15.c: New test.
	* gcc.dg/Walloc-size-larger-than-16.c: New test.
	* gcc.dg/Walloc-size-larger-than-17.c: New test.
	* gcc.dg/Walloc-size-larger-than-2.c: New test.
	* gcc.dg/Walloc-size-larger-than-3.c: New test.
	* gcc.dg/Walloc-size-larger-than-4.c: New test.
	* gcc.dg/Walloc-size-larger-than-5.c: New test.
	* gcc.dg/Walloc-size-larger-than-6.c: New test.
	* gcc.dg/Walloc-size-larger-than-7.c: New test.
	* gcc.dg/Walloc-size-larger-than-8.c: New test.
	* gcc.dg/Walloc-size-larger-than-9.c: New test.
	* gcc.dg/Walloc-size-larger-than.c: New test.

From-SVN: r261030