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SubjectRe: [PATCH bpf-next v2 2/4] selftests: bpf: Add helper to compare socket cookies
On Thu, 1 Oct 2020 at 18:11, Alexei Starovoitov
<> wrote:
> >
> > I think this might be the same problem I fixed for libbpf with [0].
> > Turns out, GCC explicitly calls out (somewhere in their docs) that
> > uninitialized variable warnings work only when compiled in optimized
> > mode, because some internal data structures used to detect this are
> > only maintained in optimized mode build.
> >
> > Laurenz, can you try compiling your example with -O2?
> All of my experiments I did with -O2.

If anybody wants to play with this more:

Seems like red hat GCC has some special sauce that fixes this behaviour?

Lorenz Bauer | Systems Engineer
6th Floor, County Hall/The Riverside Building, SE1 7PB, UK

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