Question on typedefs of anonymous structs in G++

[Paul Hilfinger <Hilfinger at adacore dot com>]

Using g++ 4.1 on Linux (at least), I observe that a type such as

      typedef struct {
          ...
      } Foo;

produces no trace of debugging information about Foo.  Serves one
right for writing a C-style definition of Foo in a C++ program, to be
sure, but G++ used to include Foo in the debugging data.  Does anyone
here happen to know the story behind the change?  Thanks.

Paul Hilfinger