[Boost-users] Useful macro

From: Klaus Backert (Klaus.Backert_at_[hidden])
Date: 2007-07-26 15:52:18

Hi,

Am 25.07.2007 um 14:51 schrieb Boris Gubenko:

> Pavel Syomin wrote:
>> 1. How to escape converting BOOST_CURRENT_FUNCTION to std::string? Is
>> there way to get function name as string literal?
>
> Some compilers support __FUNCTION__ macro.
>
> Thanks,
>   Boris

as far as I know, for GNU compilers __func__ is part of the C99  
standard. Older versions recognize only __FUNCTION__, but it is not  
standardized.

For better portability the following provides a fallback definition  
with the preprocessor:

#if __STDC_VERSION__ < 199901L
#if __GNUC__ >= 2
#define __func__ __FUNCTION__
#else
#error "function name variable is not defined"
#endif
#endif

... and in C++ there is PRETTY_FUNCTION, e.g. "void a::foo(int)"  
instead of "foo".

Greetings
Klaus