[Bug middle-end/100734] [12 Regression] /test/gnu/gcc/objdir/gcc/include-fixed/stdlib.h:291:8: internal compiler error: in from_mode_char, at attribs.h:304

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100734

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2021-05-25
          Component|target                      |middle-end
     Ever confirmed|0                           |1

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #3)
> Possibly a dup of PR100727?

I think it is unrelated.

The problem is the fix for PR 100619, sets the attributes to be "+" but the
code in attribs.c, skip over the '+' but does not check if it is the end of the
string:
          /* Skip the internal-only plus sign.  */
          if (*m == '+')
            ++m;

          acc.str = m;
          acc.mode = acc.from_mode_char (*m);