+- output source file positions for panics.
+- handle bitfield members with 0 correctly (standard says they finish the
+ current unit)
+
+Missing Errors:
+- goto over VLA declarations
+
+Missing Warnings:
+- dead assignments (int x = 5; x = bla(); -> dead assignment at x = 5;)
+- catch the if(k = b) cases, maybe require all assignments to be in parentheses
+ (but some few exceptions like toplevel, nested assignments)
+ - warn when folding shift constants with too large shift amounts
+
+main/driver:
+- delete output file if we had an error
+- go through gcc manual and emulate all the gcc flags...