On Fri, Feb 7, 2025 at 2:04 PM Martin KaFai Lau <martin.lau@xxxxxxxxx> wrote: > > On 2/3/25 6:39 PM, Jason Xing wrote: > > When compiling the selftests, the following error is printed out: > > selftests/bpf/prog_tests/changes_pkt_data.c: In function ‘test_aux’: > > selftests/bpf/prog_tests/changes_pkt_data.c:22:27: error: ‘main’ is usually a function [-Werror=main] > > struct changes_pkt_data *main = NULL; > > The bpf CI has been testing this piece with different compilers. I also don't > see it in my environment. How to reproduce it and which compiler? The gcc version is "gcc version 8.5.0" which is an old one. Yep, there are some cases sometimes where bpf CI doesn't report because the compilation relies on the system environment? Sorry that I have no clue about this happening. One thing I know is that if using some old distros and cloud services, it's not hard to see this. In this series, rename it to avoid error messages which could stop the local compilation. Thanks, Jason
