[Bug tree-optimization/37750] New: a lot of crashes with tree optimizations on mingw

[sherpya at netfarm dot it]

while testing ffmpeg compiled with gcc 4.3.3 from 4.3 trunk
I got a lot of crashes especially in snow encoding testcase

by using:
-fno-tree-dominator-opts -fno-tree-vrp -fno-dce -fno-tree-ch

I get no crashes

gcc 4.4 has same problems,

I've already filled a bug about tree-ch, that corrupts the stack
on win32 (looks like it's related to alloca())


-- 
           Summary: a lot of crashes with tree optimizations on mingw
           Product: gcc
           Version: 4.3.3
            Status: UNCONFIRMED
          Severity: critical
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: sherpya at netfarm dot it
 GCC build triplet: i686-pc-mingw32
  GCC host triplet: i686-pc-mingw32
GCC target triplet: i686-pc-mingw32


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37750