No support is curently planned for the following language features any time soon (let us know if any of these are critical to your development).

- ... (ellipsis) variable argument support

- restrict type qualifier support

- compound literals

- variable length arrays

- designators

- calls through function pointers

- _Accum type support

- recursion in optimized code

- hexadecimal floating point constant format

- fixed-point constant suffixes

- wide, multi-byte, universal character support

- "old-style" function definitions with identifier lists

- size_t and ptrdiff_t types

- _Bool, long int, long long int as bitfield types

- not all union members may begin at offset 0, depending upon the mix of members (e.g. int16 and int24)

- flexible array members