Matthew Wilcox recently realized there might be a value in depending on C extensions provided by the Plan 9 variant of the C programming language. All it would require is using the -fplan9-extensionscommand-line argument when compiling the kernel. As Matthew pointed out, Plan 9 extensions have been supported in GCC as of version 4.6, which is the minimum version supported by the kernel. So theoretically, there would be no conflict.
Nick Desaulniers felt that any addition of -f compiler flags to any project always would need careful consideration. Depending on what the extensions are needed for, they could be either helpful or downright dangerous.
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