Boost C++ Libraries: Ticket #7094: warning: unrecognized #pragma GCC system_header

anonymous — Fri, 06 Jul 2012 19:11:34 GMT

Thanks for reporting this bug. Could you please tell me the value of GNUC_MINOR for your compiler?

1czajnik@… — Mon, 09 Jul 2012 07:40:34 GMT

Replying to anonymous:

Thanks for reporting this bug. Could you please tell me the value of __GNUC_MINOR__ for your compiler?

Sure, __GNUC_MINOR__ is defined to 0 for this TI compiler.

Cheers, Kris

status changed; resolution set

Emil Dotchevski — Tue, 10 Jul 2012 03:43:58 GMT

status new → closed
resolution → fixed

Fixed in trunk revision 79398

1czajnik@… — Tue, 10 Jul 2012 10:31:47 GMT

Thanks for fixing this, Emil. I took a look at 79398, and I think this should work for my compiler. But one thing came to my mind: what about compilers, that don't define __GNUC__ at all?

I mean, don't we need some additional guards like:

#if defined(__GNUC__) && defined(__GNUC_MINOR__) && \
    (__GNUC__*100+__GNUC_MINOR__>301) && \
    !defined(BOOST_EXCEPTION_ENABLE_WARNINGS)

1czajnik@… — Tue, 10 Jul 2012 16:13:16 GMT

Replying to 1czajnik@…:

Thanks for fixing this, Emil. I took a look at 79398, and I think this should work for my compiler. But one thing came to my mind: what about compilers, that don't define __GNUC__ at all?

I mean, don't we need some additional guards like:
#if defined(__GNUC__) && defined(__GNUC_MINOR__) && \
    (__GNUC__*100+__GNUC_MINOR__>301) && \
    !defined(BOOST_EXCEPTION_ENABLE_WARNINGS)

False alarm, I just checked in MinGW, that something like:

#if (asdf*100+ghjk > 5)
#error
#endif

compiles fine without asdf or ghjk defined. I didn't know the preprocessor was supposed to work like this ;-) Cheers

wojciech.migda@… — Wed, 01 Oct 2014 10:23:45 GMT

Can you please fix it in static_assert.hpp as well? TI DSP compiler complains about undefined pragma there:

#if defined(GNUC) && !defined(GXX_EXPERIMENTAL_CXX0X) This is horrible, but it seems to be the only we can shut up the "anonymous variadic macros were introduced in C99 [-Wvariadic-macros]" warning that get spewed out otherwise in non-C++11 mode. #pragma GCC system_header #endif

I am using TI DSP C++ 7.3.5 and Boost 1.56. Should I report a separate ticket for this?

Thanks, Wojciech