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bug#9203: 24.0.50; some Clang experience


From: Peter Dyballa
Subject: bug#9203: 24.0.50; some Clang experience
Date: Sat, 30 Jul 2011 13:53:30 +0200

Hello!

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)
          ~~~ ^  ~
emacs-24.0.50/lib-src/../src/regex.c:6619:14: warning: 
      comparison of unsigned enum expression >= 0 is always true 
[-Wtautological-compare]
  return ret >= 0 ? REG_NOERROR : REG_NOMATCH;
         ~~~ ^  ~

emacs-24.0.50/lib-src/emacsclient.c:1269:52: warning: 
      passing 'const char *' to parameter of type 'char *' discards qualifiers
                confstr (_CS_DARWIN_USER_TEMP_DIR, tmpdir, n);
                                                   ^~~~~~
In file included from emacs-24.0.50/lib-src/emacsclient.c:76:
In file included from ../lib/getopt.h:31:
In file included from /usr/include/getopt.h:44:
In file included from ../lib/unistd.h:43:
/usr/include/unistd.h:423:28: note: passing argument to parameter here
size_t   confstr(int, char *, size_t) __DARWIN_ALIAS(confstr);
                            ^

The installed NS variant is a bit unstable. Maybe I just need to optimise the 
compiler switches in the near future!

--
Greetings

  Pete

I hope to die before I *have* to use Microsoft Word.
                        - Donald E. Knuth, 2001-10-02 in Tübingen






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