Re: [Boost-users] Debug data structures using aligned storage

18 Jun 2006

      Edward Diener  writes:
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Pierre THIERRY wrote:
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Le Sat, 17 Jun 2006 18:53:19 -0400, David Abrahams a écrit :
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Usually, in the debugger, you cast the base address of the actual
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storage to a pointer to the type stored, and go from there.
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Thanks a lot, it did the trick! In fact, I immediately ran into problems
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about namespaces, but I managed to find in recent gdb newsgroups
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postings how to do...
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So now I can debug my varaints! Maybe that could be valuable if such an
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information was in the Boost documentation?
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What Dave suggested is standard information for anyone using a debugger
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in C++. Putting that in the Boost documentation is unnecessary.
I disagree.  Certainly Pierre's experience belies that statement.

More generally, variant presents a high-level abstraction, and users

aren't necessarily expected to have any idea how it works internally.

For the most part, a naive user with a good debugger can explore his

program's data structures at will, but unlike almost any other library

component, variant is a barrier to the type information the debugger

needs.

-- 

Dave Abrahams

Boost Consulting

www.boost-consulting.com