GC_PROTECTS_PTRFREE_HEAP 2810 gc/os_dep.c    	return GC_PROTECTS_POINTER_HEAP | GC_PROTECTS_PTRFREE_HEAP;
GC_PROTECTS_PTRFREE_HEAP 2828 gc/os_dep.c    	  (0 != (GC_incremental_protection_needs() & GC_PROTECTS_PTRFREE_HEAP));