bug#9087: Crash reading from minibuffer with icomplete-mode

[martin rudalics]

> #0  w32_abort () at w32fns.c:7182
> #1  0x011d4c94 in Fframe_first_window (frame_or_window=56209413) at 
window.c:249
> #2  0x0110457b in choose_minibuf_frame () at minibuf.c:133
> #3  0x011045e3 in choose_minibuf_frame_1 (ignore=53151770) at minibuf.c:140
> #4  0x01039a41 in unbind_to (count=27, value=53151770) at eval.c:3437
> #5  0x010334d9 in unwind_to_catch (catch=0x88e450, value=53436670) at
> eval.c:1290

This abort seems to come from a frame containing a window which has
neither a buffer nor a child window.

> (gdb) bt
> #0  w32_abort () at w32fns.c:7182
> #1  0x011ef3d0 in Fset_window_configuration (configuration=56085445)
> at window.c:5720
> #2  0x01039a41 in unbind_to (count=34, value=53151770) at eval.c:3437
> #3  0x010334d9 in unwind_to_catch (catch=0x88d9f0, value=53151794) at
> eval.c:1290

OTOH, this one looks like a mismatched UNBLOCK_INPUT.

martin