fn reallocAdvanced(self: Allocator, old_mem: anytype, new_n: usize, return_address: usize) t: { const Slice = @typeInfo(@TypeOf(old_mem)).Pointer; break :t Error![]align(Slice.alignment) Slice.child; }
self: Allocator,
old_mem: anytype,
new_n: usize,
return_address: usize,