[Bug c++/54130] Recognize builtins with bool return type

[joseph at codesourcery dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54130

--- Comment #3 from joseph at codesourcery dot com <joseph at codesourcery dot com> 2012-07-31 14:43:18 UTC ---
In C it's a macro not a function and there is no guarantee that there 
exists a function with that name, or what the semantics of such a function 
would be.  In C++, unlike C, I think you are required to include the 
standard headers to get any standard library facilities.  (For C, you can 
use functions, not macros, without including headers if the functions' 
prototypes do not involve any type defined in a standard header, only 
built-in C types.)