bug#26837: Wrong file in "autoloading failed to define" error

[Alex <agrambot@gmail.com>]

Glenn Morris <rgm@gnu.org> writes:

> Am I mistaken in the following patch to fix this, or has load not been
> moving an already present file to the start of load-history since c 2005?
>
> --- a/src/lread.c
> +++ b/src/lread.c
> @@ -1885,7 +1885,7 @@ PREDICATE can also be an integer to pass to the faccessat(2) function,
>        /* On the first cycle, we can easily test here
>  	 whether we are reading the whole buffer.  */
>        if (b && first_sexp)
> -	whole_buffer = (PT == BEG && ZV == Z);
> +	whole_buffer = (BUF_PT (b) == BUF_BEG (b) && BUF_ZV (b) == BUF_Z (b));
>  
>        instream = stream;
>      read_next:

I can't claim to know what is going on within that function, but your
patch seems to only work for some files (e.g. your bar.el). If bar
starts with a comment, then bar isn't moved to the top after evaluating
(load "bar").