Re: [PATCH] gcc/file-prefix-map: Fix NULL filename handling

[Richard Biener <richard.guenther@gmail.com>]

On Fri, Nov 4, 2022 at 6:26 PM Richard Purdie via Gcc-patches
<gcc-patches@gcc.gnu.org> wrote:
>
> e5c15eb183f17e806ad6b58c9497321ded87866f introduced a regression as
> some ada tests end up passing NULL as the filename to remap_filename().
> Handle this as before to fix the tests.

OK.

> gcc/ChangeLog:
>
> * file-prefix-map.cc (remap_filename): Handle NULL filenames.
>
> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
> ---
>  gcc/file-prefix-map.cc | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/gcc/file-prefix-map.cc b/gcc/file-prefix-map.cc
> index 439586bd2b5..40b10edcf92 100644
> --- a/gcc/file-prefix-map.cc
> +++ b/gcc/file-prefix-map.cc
> @@ -73,7 +73,7 @@ remap_filename (file_prefix_map *maps, const char *filename)
>    char *realname;
>    size_t name_len;
>
> -  if (lbasename (filename) == filename)
> +  if (!filename || lbasename (filename) == filename)
>      return filename;
>
>    realname = lrealpath (filename);
> --
> 2.34.1
>