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Re: PATCH RFA: -Wc++-compat warning about duplicate decls


Dave Korn wrote:
Robert Dewar wrote:
Ian Lance Taylor wrote:
In C, it's OK to write
  int i;
  int i;
In C++, it is not.  This patch adds a -Wc++-compat warning for this
case.  This patch requires approval from the C frontend maintainers.
shouldn't this in any case generate a warning in C, how can
it be useful to do this, regardless of C++ compatibility.

I don't understand. These are just uninitialised commons, aren't they? Why would a C compiler warn about that?

because it seems like fundamentally suspicious code to me, and that's what warnings are about. I can't see how this could ever be useful (a fact that is apparently recognized in the C++ standard :-))

cheers, DaveK


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