Use Object Size Type zero for -Warray-bounds [PR101374].

Use Object Size Type zero for -Warray-bounds [PR101374].

Resolves:
PR bootstrap/101374 - -Warray-bounds accessing a member subobject as derived

gcc/cp/ChangeLog:
	PR bootstrap/101374
	* module.cc (module_state::read_macro_maps): Temporarily disable
	-Warray-bounds.
	(module_state::install_macros): Same.

gcc/ChangeLog:
	PR bootstrap/101374
	* gimple-array-bounds.cc (array_bounds_checker::check_mem_ref):
	Use Object Size Type 0 instead of 1.

gcc/testsuite/ChangeLog:
	PR bootstrap/101374
	* c-c++-common/Warray-bounds-3.c: Xfail assertion.
	* c-c++-common/Warray-bounds-4.c: Same.