[PATCH] Against SIGWINCH annoyance in edit cli cmd

[Lluís Batlle i Rossell <viric at viric dot name>]

Hello,

I wrote this small patch that fixes a very annoying bug I hit often in gdb. To
get the annoyance, it only requires to run "edit" in the gdb cli to launch an
in-terminal editor, and then resize the terminal. Easy to happen on a tiling wm.

Then both gdb and the editor read the terminal keys. Mess.

I found that the readline code takes out the SIGWINCH handler that has
SA_RESTART; then the edit-cmd calls 'waitpid()' careless, and as there is no
restart of syscalls, waitpid() unblocks and goes back to the gdb prompt. But
only SIGWINCH happened.

This patch attached fixes the situation for me.

Thank you,
Lluís.

Attachment: gdb-edit-sigwinch.patch
Description: Text document