Comment by matheusmoreira

The C standard doesn't really matter. Standards don't compile or run code. Only thing that matters is what the compilers do. "Linux kernel C" is a vastly superior language simply because it attempts to force the compiler to define what used to be undefined.

This -fno-delete-null-pointer-checks flag is just yet another fix for insane compiler behavior and it's not the first time I've seen them do it. I've read about the Linux kernel's troube with strict aliasing and honestly I don't blame them for turning it off so they could do their type punning in peace. Wouldn't be surprised if they also had lots more flags like -fwrapv and whatnot.