Re: [boost] Macros at namespace scope: trailing semicolon?

From: Peter Dimov (pdimov_at_[hidden])
Date: 2005-07-18 11:32:20

Chris Uzdavinis wrote:
> Chris Uzdavinis <chris_at_[hidden]> writes:
>
>> Please consider this simple example:
> ...
>>   #define LOG(X) log((X), __FILE, __LINE__)
>
> Oops.  The typo on __FILE was an accident, and I hope it won't be a
> distraction from the example I was trying to make.

This is not a namespace-level macro. It expands to an expression. An 
expression macro must not contain a trailing semicolon because it can be 
used in contexts where a semicolon is illegal:

static int dummy = LOG(something), 1;