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Date:   Wed, 12 Aug 2020 15:34:37 +0000
From:   Song Liu <>
To:     Andrii Nakryiko <>
CC:     bpf <>,
        "" <>,
        Alexei Starovoitov <>,
        "" <>,
        "" <>,
        Kernel Team <>
Subject: Re: [PATCH bpf] tools/bpftool: make skeleton code C++17-friendly by
 dropping typeof()

> On Aug 11, 2020, at 7:59 PM, Andrii Nakryiko <> wrote:
> Seems like C++17 standard mode doesn't recognize typeof() anymore. This can
> be tested by compiling test_cpp test with -std=c++17 or -std=c++1z options.
> The use of typeof in skeleton generated code is unnecessary, all types are
> well-known at the time of code generation, so remove all typeof()'s to make
> skeleton code more future-proof when interacting with C++ compilers.
> Fixes: 985ead416df3 ("bpftool: Add skeleton codegen command")
> Signed-off-by: Andrii Nakryiko <>

Acked-by: Song Liu <>

Cc: <> # v5.7+

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