Subject:
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legOS C++ questions
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Newsgroups:
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lugnet.robotics
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Date:
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Sat, 2 Jan 1999 20:22:34 GMT
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Viewed:
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1177 times
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I'm having some more success and of course more problems.
I whipped up a C++ version of one of the demo programs.
I successfully compiled and linked it after adding a
a few routines from the libgcc2.c see below.
As long as I create my class objects on the stack and
don't use any task management routines the C++ constructors
and destructors get called automatically. However, when
I add the execi calls the destructors no longer get invoked.
I'm assuming that is because of the way tm.c manipulates
the return function. It appears to stuff the address
of the exit routine on the stack. I would guess it is
replacing the destructor call. Is there a way around this?
If these questions are not appropriate for this group
please let me know and I will stop asking them.
-- routines from libgcc2.c --
extern "C" {
void __builtin_delete(void *ptr)
{
if ( ptr )
free(ptr);
}
void *top_elt[2];
void **_dynamic_handler_chain = top_elt;
void *** __get_dynamic_handler_chain()
{
return &_dynamic_handler_chain;
}
}
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Message has 1 Reply:
 | | Re: legOS C++ questions
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| (...) Destructors for stack-based objects get run as soon as the enclosing scope exits. If you call exit, the compiler doesn't know it needs to destroy them first. If you dynamically allocate objects, you have to destroy them yourself for the (...) (26 years ago, 3-Jan-99, to lugnet.robotics)
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