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-Wunreachable-code is a lie

From:
Jarkko Hietaniemi
Date:
November 26, 2014 02:25
Subject:
-Wunreachable-code is a lie
Message ID:
54753A11.40200@iki.fi
... in gcc, that is.  The functionality was removed years ago, but the 
flag is still silently accepted, and ignored.

https://gcc.gnu.org/ml/gcc-help/2011-05/msg00360.html

In clang the flag does what it says in the bottle.

(Learned this from http://www.dwheeler.com/essays/apple-goto-fail.html)



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