TextBuffer methods require NULL-terminated strings regardless of length

[diamondburned]

TextBuffer methods require NULL-terminated strings regardless of length

[diamondburned]

This isn't actually the case. There's actually a length integer overflow,
causing the results to be negative.

There isn't one. The old pointer was a Cgo detail, probably. The call after that
shows the correct length integer:

github.com/diamondburned/gotk4/pkg/gtk/v4._Cfunc_gtk_text_buffer_insert(0x7f4980bc3d00, 0xc0045ba8c0, 0xc001aacaf8, 0x4)
	_cgo_gotypes.go:39452 +0x45 fp=0xc0009d8d48 sp=0xc0009d8d20 pc=0xc2f085
github.com/diamondburned/gotk4/pkg/gtk/v4.(*TextBuffer).Insert.func1(0xc0009d8dc8, 0xd4b905, 0x7f4980bc3d00, 0x99999901)
	/home/diamond/.go/pkg/mod/github.com/diamondburned/gotk4/[email protected]/gtk/v4/gtktextbuffer.go:1355 +0x85 fp=0xc0009d8d98 sp=0xc0009d8d48 pc=0xd44465
github.com/diamondburned/gotk4/pkg/gtk/v4.(*TextBuffer).Insert(0xc004642318, 0xc0035332d8, {0xc001aacaf8, 0x4})
	/home/diamond/.go/pkg/mod/github.com/diamondburned/gotk4/[email protected]/gtk/v4/gtktextbuffer.go:1355 +0x6d fp=0xc0009d8dd8 sp=0xc0009d8d98 pc=0xd4438d

[diamondburned]

It doesn't seem like this is a real issue.