[cfe-commits] adding "-fasan" flag

[Chandler Carruth]

On Tue, Nov 15, 2011 at 8:22 PM, Kostya Serebryany <kcc at google.com> wrote:

> Quite a few users (including WebKit) already use the current name, it
> would be sad to break compatibility.


There could be a (hopefully temporary) compatibility define of
ADDRESS_SANITIZER, but it would seem good to use the __has_feature(...)
functionality in Clang to avoid this problem long-term.

We could even use -fasan (if you are convinced to change the name) to
enable the compatibility mode....

I just don't want compatibility to lock us into an inferior solution. We
should design things the way they *should* work, and provide any
compatibility workarounds necessary for the brief period of time necessary
to update folks.
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