[csmith-project/csmith] 7d6fae: add prefix/suffix ++/--

[Xuejun Yang <jxyang@cs.utah.edu>]

  Branch: refs/heads/master
  Home:   https://github.com/csmith-project/csmith

  Commit: 7d6fae96cc710e65513ea4822f9d3c721748a2d0
      https://github.com/csmith-project/csmith/commit/7d6fae96cc710e65513ea4822f9d3c721748a2d0
  Author: Xuejun Yang <jxyang@cs.utah.edu>
  Date:   2011-07-14 (Thu, 14 Jul 2011)

  Changed paths:
    M src/CGOptions.cpp
  M src/CGOptions.h
  M src/CVQualifiers.cpp
  M src/Constant.cpp
  M src/Expression.cpp
  M src/Expression.h
  M src/Lhs.cpp
  M src/Lhs.h
  M src/Probabilities.cpp
  M src/Probabilities.h
  M src/StatementAssign.cpp
  M src/StatementAssign.h
  M src/Type.cpp
  M src/Type.h

  Log Message:
  -----------
  add prefix/suffix ++/--

1) emit ++/-- operators as either prefix or suffix when there is no risk of signed integer overflow. That means the variable that is incremented/decremented is either unsigned, or has a width < INT_SIZE. INT_SIZE is 4 bytes by default, and can be configured

2) add "(void*)" before "0" to indicate a null pointer. This gets rid of the gcc warnings like: "assignment makes pointer from integer without a cast", and "passing argument 1 of 'func_20' makes pointer from integer without a cast"

3) kill another gcc warning that is caused by dropped qualifiers from LHS of an embedded assignments

4) replace StatementAssignFilter with a VectorFilter. It's a pain to maintain so many specialized filters.

5) clean up the code that initializes probability tables