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List:       gcc
Subject:    Re: G++: division by zero in store_split_bit_field
From:       Jason Merrill <jason () cygnus ! com>
Date:       2000-01-31 21:26:55
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> http://gcc.gnu.org/ml/gcc-bugs/2000-01/msg00006.html

This happens because we have code like

  extern struct A a;

  struct A { int i; };

and we aren't fixing up 'a' after we've seen the definition of 'A'.
Supposedly hack_incomplete_structures is supposed to be doing that, but
it's broken.  And it can't work in general, anyway; it only looks at the
current binding level, which is OK for C, but in C++ you could have

  struct A;

  namespace B {
    extern A a;
  }

  struct A { int i; };

so we would need to munge through all the namespaces, too.  I think a
list of all namespace-scope incomplete decls is in order.

Jason

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