Update (2022-07-25): David Chisnall points out that (at least) clang can process blobs-in-C-source-code faster if they're embedded as a string (but watch out for the null byte at the end!).
You can prevent the compiler from appending the null byte to an array by specifying the exact size of the array like this: https://godbolt.org/z/bGbae8x7W
You can prevent the compiler from appending the null byte to an array by specifying the exact size of the array like this: https://godbolt.org/z/bGbae8x7W