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bug#9203: 24.0.50; some Clang experience


From: Eli Zaretskii
Subject: bug#9203: 24.0.50; some Clang experience
Date: Sat, 30 Jul 2011 15:27:06 +0300

> From: Peter Dyballa <address@hidden>
> Date: Sat, 30 Jul 2011 13:53:30 +0200
> 
> When using
> 
>       Apple clang version 2.0 (tags/Apple/clang-139) (based on LLVM 2.9svn)
>       Target: x86_64-apple-darwin10
>       Thread model: posix
> 
> to compile GNU Emacs on Mac OS X 10.6.8 with intel Core i7 it warns about 
> some statements:
> 
> emacs-24.0.50/lib-src/../src/regex.c:6603:15: warning: 
>       comparison of unsigned enum expression >= 0 is always true 
> [-Wtautological-compare]
>       if (ret >= 0)
>           ~~~ ^  ~

`ret' is of the type `reg_errcode_t', which is an enumerated data
type, so its signedness is implementation-defined, AFAIK.  Why did you
use that particular warning option?





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