[cfe-commits] r155923 - /cfe/trunk/lib/Frontend/CompilerInstance.cpp

[Ted Kremenek]

On May 1, 2012, at 11:16 AM, David Blaikie <dblaikie at gmail.com> wrote:

> Would it be practical for Clang to have a warning that caught this (at
> least incrementally) - the assignment inside the conditional is dead -
> nothing after it reads CurFile, so it would be nice if we warned. (&
> then the user would probably be able to see that the rest of this was
> silly too)

It's definitely possible.  It's a simple flow-sensitive analysis (basically live variables analysis), but it would need to be specially optimized to make it acceptable on the performance front for the frontend.
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