------- Comment #1 from jakub at gcc dot gnu dot org 2010-08-20 15:23 ------- =+ in x =+ y; isn't one token, but two, it is the same as if you write x = + y ; And, unary + is standard C unary operator: The result of the unary + operator is the value of its (promoted) operand. The integer promotions are performed on the operand, and the result has the promoted type.
So, I don't think there is anything that should be warned about, it is normal valid C. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45358
