Re: How to use assert?

James Kanze <>
Sat, 15 May 2010 04:00:43 -0700 (PDT)
On May 14, 4:03 pm, Christian Hackl <> wrote:

none ha scritto:


Hm my debug build takes forever to compile and run so I am
currently developing on a release build.

If your compiler takes forever to compile, then chances are
there is something wrong with your compiler, and you should
fix that first.

Or the environment you're working in. With the default settings
for Visual Studios, debug mode compiles faster than release.
(But the default settings for both are pretty useless, and you
generally only want one mode anyway---or three, or whatever,
depending on the application.)

Is it not possible to undefine NDEBUG in my release code?

Of course. It's even better than that: you can actually
activate and deactivate assertions separately in each
compilation unit. That's so you can leave them on by default
and disable them only where appropriate.

The authors of the C standard carefully designed assert so that
you can turn it off on a function by function basis. It was
quite understood at the time that you would almost never want to
turn it off globally.

James Kanze

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