c++/3948: Two destructors are called when no copy destructor is defined

[ksingh@oz.agile.tv]

>Number:         3948
>Category:       c++
>Synopsis:       Two destructors are called when no copy destructor is defined
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Aug 05 21:06:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Kalvinder Singh
>Release:        GCC-3.0
>Organization:
>Environment:
Reading specs from /usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/specs
Configured with: ../configure
Thread model: single
gcc version 3.0
>Description:
Quote from Nathan Sidwell

in main, we copy construct two C objects during the call to Foo.
Foo gets one of these by value, which is dtor'd in Foo. upon return
we dtor the other one. I think this is a problem with the pass-by-value
ABI method. It does look like a bug.

End Quote

>How-To-Repeat:
Compile and run the attached program
>Fix:
None
>Release-Note:
>Audit-Trail:
>Unformatted:
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