2 - eliminate target_architecture.h and replace with stuff in lang_features.h
3 - create structures for variables and functions, removing the omnipotent
7 - Add preprocessor code.
8 - proper handling of different file encodings, parsing non-ascii strings
9 - We could save some space by holding source positions in a separate (somehow
10 compressed table) and only storing pointers to it on the AST.
13 - disallow storage class specifiers in struct/union members
14 - add constant folding code (optional, ast2firm already does it)
15 - Refactor code, so code to handle number values (and strings?) is an own
17 - Support some attributes. noreturn, unused, printf, scanf, packed would be
18 interesting candidates
19 - Add columns to source positions
20 - SourcePositions could be stored selectively on expressions that really need
22 - check semantic for functions declared/defined in global scope and declared
23 again in a local scope
24 - print initialisation type_path for initializer errors
27 - handle non-constant initializers
28 - output source file positions for panics.
29 - handle bitfield members with 0 correctly (standard says they finish the
34 * label: declaration; is no valid C99 but we parse it anyway
35 * check switches for double cases
38 * dead assignments (int x = 5; x = bla(); -> dead assignment at x = 5;)
40 * check switches for all enums values
41 * catch the if(k = b) cases, maybe require all assignments to be in parentheses
42 (but some few exceptions like toplevel, nested assignments)
45 (only test datasets tried yet)
50 186.crafty: works (~though an asm is replaced with a stub)