[PATCH] cmd: env: fix unreachable statements

[Tom Rini]

On Fri, May 08, 2020 at 07:27:05PM +0200, Heinrich Schuchardt wrote:
> On 5/8/20 6:19 PM, Tom Rini wrote:
> > On Fri, May 08, 2020 at 06:10:27PM +0200, Heinrich Schuchardt
> > wrote:
> >> On 08.05.20 07:51, AKASHI Takahiro wrote:
> >>> C's switch statement takes an integer value for switching. As
> >>> efi_status_t is defined as unsigned long and each error code
> >>> has the top bit set, all "cases" cannot be reachable.
> >>>
> >>> Signed-off-by: AKASHI Takahiro <takahiro.akashi at linaro.org>
> >>> Reported-by: Coverity (CID 300335)
> >>
> >> The requirement of C 1999 specification is: "The controlling
> >> expression of a switch statement shall have integer type." The
> >> requirement is not that the controlling expression should be
> >> int.
> >>
> >> GCC works fine with uint64_t as argument of a switch statement.
> >
> > OK, but for the record what about C11 with GNU extensions?
> 
> C11: "The controlling expression of a switchstatement shall have
> integer type." (https://web.cs.dal.ca/~vlado/pl/C_Standard_2011-n1570.pdf)
> 
> Why did you expect anything that is incompatible to C99?

I didn't really, I just wanted a reference to C11.  It's odd I think
Coverity hit this as a false positive, but it's just a tool.  Thanks!

-- 
Tom
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