Subject: bug#18140: [PATCH] macros.c: CHECK_VECTOR_OR_STRING invokes wrong_type_argument for Qnil instead of return 0

From: Andreas Schwab <[email-masked]>
Date: Tue, 29 Jul 2014 10:37:42 +0200

Jan Chaloupka <[email-masked]> writes:

> Yes, for garbage collector. However, Vlast_kbd_macro will continue being
> Qnil.

Why is that a problem?  That is the default value.

> In function Fstart_kbd_macro (macros.c), Vlast_kbd_macro of current_kboard
> is
> Qnil for the first invocation. If NILP (append) is false
> CHECK_VECTOR_OR_STRING fails (invocation
> of wrong_type_argument resulting in emacs_abort).

Where does it call emacs_abort?

> However, it has to pass.

Why?

Andreas.

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Andreas Schwab, SUSE Labs, [email-masked]
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