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Re: PATCH to C front-end: PR 21759

"Giovanni Bajo" <rasky@develer.com> writes:

| Gabriel Dos Reis <gdr@integrable-solutions.net> wrote:
| 
| > this patch is the first in a series for warning about ISO C constructs
| > that are outside the common subset of C and C++.  
| 
| I suggest to add different subflags for each specific warning:
| 
| -Wc++-compat-casts
| -Wc++-compat-keywords
| -Wc++-compat-enums
| [...]

Why would we do that?  If we're ever going to say that a code is in
the subset, what the reasons why we would not warn about keywords,
cast, enums?  I think we must not forget keeping the switches sizeable
(if we start properly categorizing Annex C and Annex D, we will end up
with quite a certain number of switches...)

-- Gaby
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