[cfe-dev] MSVC /Za considered harmful

[Chandler Carruth]

On Wed, Jun 6, 2012 at 3:18 AM, Benjamin Kramer <benny.kra at googlemail.com>wrote:

> A few words to /W4: We experimented with having an automated builder using
> /W4 in the msvc8-days but it was very noisy and slowed down the build by 2x
> or so, which was unacceptable for a bot. This may have changed now but it
> still requires someone to clean up all the false positives
>

If the warnings that will need cleaning are false positives, I'm very
opposed to this cleanup effort. We get no benefit from it really, and it
has a high long-term maintenance cost as the majority of developers will
continually check in new code regressing these warnings, as the warnings
don't represent actual problems with the code.
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