[Bug preprocessor/39213] [4.4/4.5/4.6 regression] Preprocessor ICE with -m64 and --traditional-cpp

ebotcazou at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Wed Nov 24 12:46:00 GMT 2010


Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

           What    |Removed                     |Added
                 CC|                            |tromey at redhat dot com

--- Comment #12 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2010-11-24 12:35:18 UTC ---
add_line_note adds a sentinel note

  *d = '\n';
  /* A sentinel note that should never be processed.  */
  add_line_note (buffer, d + 1, '\n');
  buffer->next_line = s + 1;

then _cpp_overlay_buffer changes buffer->cur and the test at the beginning of

      if (note->pos > buffer->cur)

then becomes totally bogus.

I guess _cpp_overlay_buffer/_cpp_remove_overlay must temporarily invalidate the
notes somehow.

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