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vincentmli / xdp-tools

Utilities and example programs for use with XDP
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i32 (ptr): A call to built-in function 'memcpy' is not supported. #5

Open vincentmli opened 1 month ago

vincentmli commented 1 month ago

custom_memcpy in https://github.com/vincentmli/xdp-tools/blob/master/xdp-dns/xdp_dns.bpf.c compiles fine but custom_memcpy in https://github.com/vincentmli/xdp-tools/blob/bpf-dnyptr/xdp-dns/xdp_dns.bpf.c result in compiler error i32 (ptr): A call to built-in function 'memcpy' is not supported, switch custom_memcpy to __builtin_memcpy has same compiler error

vincentmli commented 1 month ago

Hi @yonghong-song, Vincent here :) when you have time, could you help looking at above code example why I got the clang compiler error with custom_memcpy, I am not sure if following is related

https://github.com/llvm/llvm-project/issues/93700 https://github.com/llvm/llvm-project/pull/97648