Re: [PATCH bpf] selftests/bpf: Fix broken build where char is unsigned

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to bpf/bpf.git (master)
by Alexei Starovoitov <ast@xxxxxxxxxx>:

On Thu,  2 Nov 2023 11:35:37 +0100 you wrote:
> From: Björn Töpel <bjorn@xxxxxxxxxxxx>
> 
> There are architectures where char is not signed. If so, the following
> error is triggered:
> 
>   | xdp_hw_metadata.c:435:42: error: result of comparison of constant -1 \
>   |   with expression of type 'char' is always true \
>   |   [-Werror,-Wtautological-constant-out-of-range-compare]
>   |   435 |         while ((opt = getopt(argc, argv, "mh")) != -1) {
>   |       |                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^  ~~
>   | 1 error generated.
> 
> [...]

Here is the summary with links:
  - [bpf] selftests/bpf: Fix broken build where char is unsigned
    https://git.kernel.org/bpf/bpf/c/d84b139f53e8

You are awesome, thank you!
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