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Re: problem with -Wunreachable-code

On Jul 21, 2006, at 12:25 PM, Sean McBride wrote:

On 2006-07-21 11:41, James W. Walker said:

The new article on "static code analysis",
<http://developer.apple.com/tools/xcode/staticanalysis.html>,
inspired me to try some new warnings.  When I turn on
-Wunreachable-code, I get thousands (literally) of warnings, mostly
not in my code but in standard C++ headers.  For example, it claims
that the constructor of std::exception will never be executed.  Is
this warning broken, or what?

I have been going through that doc as well, and -Wunreachable-code also
gives a warning everytime assert() from assert.h is used.

Yep. Kind of annoying, huh? But the assert() warning has been fixed for a future release, so hopefully you'll be able to use - Wunreachable-code more often eventually.

I'm not sure if we have a bug on the std::exception case, so it'd be good if someone wrote one up.

Apple's headers are full of warnings in general BTW.

If you find warnings in Apple's headers when compiling C99 code, please file bugs. We're always interested in hearing about those cases. -pedantic is an exception to that, by the way; I'm disappointed that the static code analysis article recommended it.

-Eric

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References: 
 >problem with -Wunreachable-code (From: "James W. Walker" <email@hidden>)
 >Re: problem with -Wunreachable-code (From: "Sean McBride" <email@hidden>)



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