[Bug preprocessor/118737] preprocessor should error out right if one of the first few bytes is not a recognized character

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118737

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2025-02-04
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.  Happens to me as well.  We could even detect common compression
format headers / magic bytes for a better diagnostic.

tar files are another source of "interesting" errors.