#2885 `local array` at top-level crashes gnuplot silently

[Ilya Zakharevich]

I try to debug certain suggestions from LLM, and typing this:

local array b = [2, 4, 5, 6]; 

crashes gnuplot silently.

[Bastian Märkisch]

Confirmed. Still happens with 6.0.5 and is not specific to Windows. Of course "local" on top-level makes little sense, but gnuplot certainly should not crash. The code segfaults here:

    /* Create new local variable with this name */
    if (array_token) {
            c_token = array_token;
            local_array_command(lf_head->depth);

because lf_head is NULL in that case.

[Ethan Merritt]

Confirmed. It broke between 6.0.1 and 6.0.2 . The breakage was imported from 6.1 so the fix is needed there also.

Fix pushed for both branch-6-0-stable and master