API usage limit while send 3 messages error and warning and some chat

I decided to fix a couple of warnings and errors in the Linux kernel for my phone. Here’s what I sent: net/bluetooth/amp.c:153:9: error: fields must have a constant size: ‘variable length array in structure’ extension will never be supported 153 | char ctx[crypto_shash_descsize(tfm)]; | ^ net/bluetooth/amp.c:152:22: warning: field ‘shash’ with variable-sized type ‘struct shash_desc’ not at the end of a struct or class is a GNU extension [-Wgnu-variable-sized-type-not-at-end] 152 | struct shash_desc shash; | ^ I specified that I’m using the C23 standard and the Clang compiler, and in the end, I fixed just 1 warning—it didn’t even reach an error; I hit a limit. My question is: what the hell is going on here?