[Bug middle-end/27620] [4.1/4.2 Regression] g++.dg/init/array15.C uses 4MB stack space

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2006-05-15 23:29 -------
This is a middle-end issue when expanding:
a->b = {};
it creates a huge array on the stack.
In 4.0.3, we created a huge array on the heap which is just as wrong but not as
bad even though some heaps are limited (SPU).
We should just have one memset and no memcpy.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
          Component|c++                         |middle-end
     Ever Confirmed|0                           |1
  GCC build triplet|i686-pc-linux-gnu           |
   GCC host triplet|i686-pc-linux-gnu           |
 GCC target triplet|i686-pc-linux-gnu           |
           Keywords|                            |missed-optimization
      Known to fail|                            |4.1.0 4.2.0
      Known to work|                            |4.0.3
   Last reconfirmed|0000-00-00 00:00:00         |2006-05-15 23:29:46
               date|                            |
            Summary|g++.dg/init/array15.C uses  |[4.1/4.2 Regression]
                   |4MB stack space             |g++.dg/init/array15.C uses
                   |                            |4MB stack space
   Target Milestone|---                         |4.1.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27620