Messages in this thread | | | Subject | Re: [PATCH 1/2] Compiler Attributes: add support for __fallthrough (gcc >= 7.1) | From | Bernd Petrovitsch <> | Date | Mon, 22 Oct 2018 11:41:56 +0200 |
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On 22/10/2018 00:27, Theodore Y. Ts'o wrote: > On Sun, Oct 21, 2018 at 07:14:13PM +0200, Miguel Ojeda wrote: >> From the GCC manual: >> >> fallthrough >> >> The fallthrough attribute with a null statement serves as a >> fallthrough statement. It hints to the compiler that a statement >> that falls through to another case label, or user-defined label >> in a switch statement is intentional and thus the -Wimplicit-fallthrough >> warning must not trigger. The fallthrough attribute may appear >> at most once in each attribute list, and may not be mixed with >> other attributes. It can only be used in a switch statement >> (the compiler will issue an error otherwise), after a preceding >> statement and before a logically succeeding case label, >> or user-defined label. >> >> https://gcc.gnu.org/onlinedocs/gcc/Statement-Attributes.html > > Do we know if coverity understands the fallthrough attribute? One of > the reasons why I started using /* fallthrough */ is because it kept > Coverity happy.
FWIW, current "eclipse" has the same "problem".
> If the conversion from /* fallthrough */ to the __fallthrough__ > attribute means that we start gethting a lot of Coverity warnings,
We could keep both.
MfG, Bernd -- Bernd Petrovitsch Email : bernd@petrovitsch.priv.at LUGA : http://www.luga.at
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