4 - eliminate target_architecture.h and replace with stuff in lang_features.h
5 - redo storage classes: so we can separate real from declared storage class
6 - create structures for variables and functions, removing the omnipotent declaration
9 - Add preprocessor code
10 - proper handling of different file encodings, parsing non-ascii strings
11 - We could save some space by holding source positions in a separate (somehow
12 compressed table) and only storing pointers to it on the AST.
15 - disallow storage class specifiers in struct/union members
16 - label: declaration; is no valid C99 but we parse it anyway
17 - add constant folding code (optional, ast2firm already does it)
18 - Refactor code, so code to handle number values (and strings?) is an own
20 - Support some attributes. noreturn, unused, printf, scanf, packed would be
21 interesting candidates
22 - Add columns to source positions
23 - SourcePositions could be stored selectively on expressions that really need
25 - check semantic for functions declared/defined in global scope and declared
26 again in a local scope
27 - print initialisation type_path for initializer errors
28 - check switches for: double cases, all enums
31 - handle non-constant initializers
32 - output source file positions for panics...
33 - handle bitfield members with 0 correctly (standard says they finish the
37 * check switches for double cases
40 * dead assignments (int x = 5; x = bla(); -> dead assignment at x = 5;)
42 * check switches for all enums values
46 (only test datasets tried yet)
51 186.crafty: works (~though an asm is replaced with a stub)