[Nano-devel] segfault when undoing at the top of the file

[Benno Schulenberg]

Hello Mark,

Editing a file just now, nano segfaulted when undoing a paste
onto the first line of the file.  To reproduce:

src/nano -I +1 ChangeLog

^K   ^U   ^K   M-\   ^U   M-U
segfault

The M-\ is essential, when moving the cursor to the start of
the file in some other way, the segfault does not happen, or
at least not right away:

^K   ^U   ^K   <Up>   ^U   M-U   M-U   M-U   M-U   M-U
segfault

Benno

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