[Bug middle-end/26300] [4.1 Regression] ICE in trunc_int_for_mode

["jakub at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #4 from jakub at gcc dot gnu dot org  2006-02-15 14:55 -------
Well, undefined behavior only if you reach it.
The original code looked like:
 if (((type) == (Qnothing)))
  return IMAGE_NOTHING;
 if (((type) == (Qtext)))
  return IMAGE_TEXT;
 if (((type) == (Qmono_pixmap)))
  return IMAGE_MONO_PIXMAP;
 if (((type) == (Qcolor_pixmap)))
  return IMAGE_COLOR_PIXMAP;
 if (((type) == (Qpointer)))
  return IMAGE_POINTER;
 if (((type) == (Qsubwindow)))
  return IMAGE_SUBWINDOW;
 if (((type) == (Qwidget)))
  return IMAGE_WIDGET;

 maybe_signal_simple_error("Invalid image-instance type", type,
      Qimage, errb);

 return IMAGE_UNKNOWN;

where IMAGE_UNKNOWN is 0, guess the authors just assume this will never happen.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26300