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 - Add columns to source positions
18 - SourcePositions could be stored selectively on expressions that really need
20 - check semantic for functions declared/defined in global scope and declared
21 again in a local scope
22 - for errors relating to function argument, print number of argument
23 - print initialisation type_path for initializer errors
26 - handle non-constant initializers
27 - output source file positions for panics.
28 - handle bitfield members with 0 correctly (standard says they finish the
30 - merge functions entities declared in lokal scope
35 - dead assignments (int x = 5; x = bla(); -> dead assignment at x = 5;)
36 - catch the if(k = b) cases, maybe require all assignments to be in parentheses
37 (but some few exceptions like toplevel, nested assignments)
40 - delete output file if we had an error
45 176.gcc: sometimes works...