-O2 -Wall give virtual memory exhausted

[Yotam Medini]

Small example that gives:  virtual memory exhausted
Note: Without -O2 or -Wall compilation passes!
-- yotam
------------------------------------------------------------------------
 schwinger:50> uname -sr; egcs++ -v
 SunOS 5.5.1
 Reading specs from /home/seg/yotam/build/dryinst.Solaris/lib/gcc-lib/sparc-sun-solaris2.5/egcs-2.90.20/specs
 gcc version egcs-2.90.20 971201 (gcc2-970802 experimental)
 schwinger:51> cat bv.cc
 #include <vector>

 class C
 {
  public:
    C();
    virtual ~C() {};
  private:
    vector< vector<vector<unsigned> > >  _vvvu;
 };
 schwinger:52> egcs++ -c -O2 -Wall bv.cc
 /home/seg/yotam/build/dryinst.Solaris/include/g++/stl_construct.h: In function `void destroy<vector<vector<unsigned int,__default_alloc_template<false,0> >,__default_alloc_template<false,0> > *>(class vector<vector<unsigned int,__default_alloc_template<false,0> >,__default_alloc_template<false,0> > *, class vector<vector<unsigned int,__default_alloc_template<false,0> >,__default_alloc_template<false,0> > *)':
 /home/seg/yotam/build/dryinst.Solaris/include/g++/stl_construct.h:66: virtual memory exhausted
 schwinger:53>