V2 [PATCH] gas: Clear all auto-assigned file slots

[H.J. Lu]

On Fri, Oct 23, 2020 at 12:50 PM H.J. Lu <hjl.tools@gmail.com> wrote:
>
> Since a file slot is auto-assigned for the #APP marker appeared before
> the first .file <NUMBER> directive has been seen, clear all auto-assigned
> file slots when seeing the first .file <NUMBER> directive.
>
>         PR gas/26778
>         * * dwarf2dbg.c (file_entry): Restore auto_assigned.
>         (assign_file_to_slot): Restore the auto_assign argument.
>         (allocate_filenum): Pass TRUE to file_entry.
>         (allocate_filename_to_slot): Pass FALSE to file_entry.
>         (dwarf2_directive_filename): Clear the slots auto-assigned
>         before the first .file <NUMBER> directive was seen.
>         * testsuite/gas/i386/dwarf4-line-1.d: New file.
>         * testsuite/gas/i386/dwarf4-line-1.s: Likewise.
>         * testsuite/gas/i386/i386.exp: Run dwarf4-line-1.

The updated patch with some optimization.  OK for master?

-- 
H.J.
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