[Bug middle-end/48953] [4.7 Regression] ICE: verify_gimple failed: type mismatch in array reference with -flto and struct with vararray

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48953

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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             Status|NEW                         |ASSIGNED
         AssignedTo|unassigned at gcc dot       |rguenth at gcc dot gnu.org
                   |gnu.org                     |

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-05-11 09:41:45 UTC ---
The rev. allowed inlining to happen.  We end up with two copies of type S
for some reason - inlining is supposed to copy variable-size types but
probably does not adjust reference tree types to those copies.  I'm not sure
why this doesn't trigger without LTO (we inline during early inlining).

I suppose the two types also exist w/o LTO but they are marked compatible
via TYPE_CANONICAL which isn't re-set by copy_node.  Thus, this is an
issue with re-constructing TYPE_CANONICAL.

Mine.