From: Paul C. Kunysch (Illume_at_[hidden])
Date: 2001-05-15 09:49:05
(from a comment in conversions.cpp:)
re-toss the current exception so we can find out what type it is.
NOTE: a heinous bug in MSVC6 causes exception objects re-thrown in
this way to be double-destroyed. Thus, you must only use objects that
can tolerate double-destruction with that compiler. Metrowerks
Codewarrior doesn't suffer from this problem.
How can I derive a class from std::runtime_error (or should I
use std::exception?) and make it "double-destructible"?
Does it matter how the "what-string" is allocated or which
constructor is called?
(The MSVC version of std::exception has a member "int _m_doFree;".
I suppose this means that it tries to free the "_m_what" string
under certain circumstances and this crashes when the exception
is destroyed twice. I couldn't find the implementation of
std::exception::~exception() anywhere, and the documentation
seems to be useless to me.)
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