[cfe-commits] [patch] Make it so that some warnings in DiagGroup<"all"> aren't on by default

Chris Lattner clattner at apple.com
Wed Feb 15 03:14:54 PST 2012

What is the motivation for this patch?  Clang defaulting to more warnings on than gcc is a feature, not a bug.


On Feb 14, 2012, at 6:28 PM, Nico Weber <thakis at chromium.org> wrote:

> Hi,
> -Wall is defined like this:
>  def : DiagGroup<"all", [Most, Parentheses, Switch]>;
> This makes sense, but _all_ of the warnings in Parentheses and Switch
> are on by default, so -Wall is currently identical to -Wmost. With
> this patch, some of the warnings in that group become DefaultIgnore,
> so that they are only active if -Wall is specified. It looks like that
> was the intention for most of them, but since DiagGroup<"all"> is a
> bit confusing in this regard, they got always-enabled by accident (as
> far as I can tell).
> Ok?
> Nico
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