[Beowulf] RHEL7 kernel update for L1TF vulnerability breaks RDMA

[Peter St. John]

yes the gcc I used is 5.1, I guess that's how long I've had this laptop :-)
And I like that "not guarding" that sounds useful.

On Mon, Sep 10, 2018 at 6:15 PM, Chris Samuel <chris at csamuel.org> wrote:

> On Tuesday, 11 September 2018 1:25:55 AM AEST Peter St. John wrote:
>
> > I had wanted to say that such a bug would be caught by compiling with
> some
> > reasonalbe warning level; but I think I was wrong.
>
> Interesting - looks like it depends on your GCC version, 7.3.0 catches it
> with -Wall here:
>
> chris at quad:/tmp$ gcc -Wall test.c -o test
> test.c: In function ‘main’:
> test.c:6:2: warning: this ‘if’ clause does not guard...
> [-Wmisleading-indentation]
>   if ( test );
>   ^~
> test.c:7:3: note: ...this statement, but the latter is misleadingly
> indented as if it were guarded by the ‘if’
>    printf ( "hello\n" );
>    ^~~~~~
>
> > So I guess I have to forgive the software engineer who fat-fingered that
> > semicolon. Of course I've done worse.
>
> Oh yes, same here too!   There but for... and all that. :-)
>
> All the best,
> Chris
> --
>  Chris Samuel  :  http://www.csamuel.org/  :  Melbourne, VIC
>
>
>
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