netdev - Re: [PATCH bpf-next 09/11] libbpf: accomodate DWARF/compiler bug with duplicated identical arrays

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Message-ID: <E169E3EC-8718-46EC-AF40-9A108CE1AF15@fb.com>
Date:   Tue, 3 Nov 2020 02:52:19 +0000
From:   Song Liu <songliubraving@...com>
To:     Andrii Nakryiko <andrii@...nel.org>
CC:     bpf <bpf@...r.kernel.org>, Networking <netdev@...r.kernel.org>,
        "Alexei Starovoitov" <ast@...com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Kernel Team <Kernel-team@...com>
Subject: Re: [PATCH bpf-next 09/11] libbpf: accomodate DWARF/compiler bug with
 duplicated identical arrays



> On Oct 28, 2020, at 5:59 PM, Andrii Nakryiko <andrii@...nel.org> wrote:
> 
> In some cases compiler seems to generate distinct DWARF types for identical
> arrays within the same CU. That seems like a bug, but it's already out there
> and breaks type graph equivalence checks, so accommodate it anyway by checking
> for identical arrays, regardless of their type ID.
> 
> Signed-off-by: Andrii Nakryiko <andrii@...nel.org>

Acked-by: Song Liu <songliubraving@...com>

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