PR ipa/93583
	* cgraph.c (cgraph_node::verify_node): Verify MALLOC attribute
	and return type of functions.
	* ipa-param-manipulation.c (ipa_param_adjustments::adjust_decl):
	Drop MALLOC attribute for void functions.
	* ipa-pure-const.c (funct_state_summary_t::duplicate): Drop
	malloc_state for a new VOID clone.
	PR ipa/93583
	* gcc.dg/ipa/pr93583.c: New test.