------- Comment #14 from dseketel at redhat dot com 2008-07-01 16:29 ------- Hello,
Just a quick comment on this bug. I think that in the example you gave, gcc (at the least 4.3.0 version) is giving a correct column location. The expression gcc is complaining about is: "a +- b". That expression is normally valid, an can be re-written as a + -b (like in 2 + -3). In that case, the '-' is called an "unary minus" operator. In your case, the reason why gcc is complaining is because 'b' is of type pointer. And you cannot apply the "unary minus" operator to a pointer. So gcc complains about the _operand_, saying the operand is of the wrong type. That is why gcc is referering to the operand, instead of refering to the '-'. On the other hand, it is notorious that gcc does not display extremely accurate column numbers in error message. Hopefully, that situation can get better with the patches attached above. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31754
