[Bug c++/31950] New: ICE in tree-ssa-alias-warnings.c

[Ralf dot Wildenhues at gmx dot de]

With mainline as of a couple of days ago:
| gcc version 4.3.0 20070514 (experimental)

g++ -O2 -Wstrict-aliasing=3 -c t.cc

gives me this error:
| t.cc: In function ‘int main()’:
| t.cc:11: internal compiler error: tree check: expected tree that contains
‘decl common’ structure, have ‘struct_field_tag’ in ffan_walker, at
tree-ssa-alias-warnings.c:638

on the following code.  I haven't tried eliminating <valarray> yet,
but may try to do so, given time.  Will try updated mainline next.

Cheers,
Ralf

#include <valarray>
using std::valarray;

struct A {
  valarray<double>* v;
  virtual ~A() { delete[] v; }
};

A Op(void);

int main()
{
  A a(Op());
  return 0;
}


-- 
           Summary: ICE in tree-ssa-alias-warnings.c
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: Ralf dot Wildenhues at gmx dot de
 GCC build triplet: x86_64-unknown-linux-gnu
  GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31950