Boost C++ Libraries: Ticket #7477: boost:::format will not compile under VC++ WITH "Microsoft language extensions"

Sun, 07 Oct 2012 06:13:32 GMT

I asked about this on Stackoverflow. http://stackoverflow.com/questions/12764151/compiler-error-vc-2012-boostformat/12764654#12764654

Sun, 07 Oct 2012 06:16:26 GMT

Eratum: I should have said, "Boost::format will not compile under Microsoft VC++ unless Microsoft Language Extensions (/Za) are turned ON." I cannot find an "edit" button on the ticket.

status changed; resolution set

Michel Morin — Sun, 07 Oct 2012 06:37:54 GMT

status new → closed
resolution → invalid

Don't use /Za.

The /Za option is buggy and you shouldn't use it. See the posts from Stephan T. Lavavej (Visual C++ libraries developer) such as this and this. Also, Boost's warning guidelines might be useful for you.

Michel Morin — Sun, 07 Oct 2012 06:39:41 GMT

Ah, I meant "don't turn off Microsoft Language Extensions."

Sun, 07 Oct 2012 06:58:49 GMT

I would like for the decision to close this item to be reviewed. I spent hours figuring out what was wrong. Others will too. Or give up. What could it hurt to add "throw()" to some functions that cannot throw an exception?

status changed; resolution deleted

Michel Morin — Sun, 07 Oct 2012 07:15:37 GMT

status closed → reopened
resolution invalid

Sun, 07 Oct 2012 12:17:04 GMT

@James I tracked it down. The bug is in the VC++ header file The declaration for ~basic_streambuf() does not have a "throw()" exception-specifier. Section 27.6.3, C++11; Section 27.5.1 C++03. Nevertheless, boost could add it harmlessly. The destructor is on line 65 in alt_sstream_impl.hpp.

virtual ~basic_altstringbuf() throw() edit, j. dadson

{ dealloc(); }

Jive Dadson — Sun, 07 Oct 2012 21:37:25 GMT

I submitted a bug report to Microsoft. https://connect.microsoft.com/VisualStudio/feedback/details/766514/incorrect-exception-specifier-in-vc-header-file-causes-correct-user-code-not-to-compile#tabs - Jive

claudiordgz — Sun, 30 Nov 2014 00:47:13 GMT

I spent hours as well, the error appeared in ASIO (No Boost) in my case in error.ipp

const char* name() const ASIO_ERROR_CATEGORY_NOEXCEPT

and in error_code.ipp

const char* name() const ASIO_ERROR_CATEGORY_NOEXCEPT

For the moment I had to add the throw, but I feel filthy.

I think this error should be fixed from MS end, just my two cents.

summary changed

Marshall Clow — Fri, 13 Oct 2017 13:44:18 GMT

summary boost:::format will not compile under VC++ without "Microsoft language extensions" → boost:::format will not compile under VC++ WITH "Microsoft language extensions"

owner, status, milestone changed

James E. King, III — Sat, 14 Oct 2017 12:09:27 GMT

owner changed from Samuel Krempp to James E. King, III
status reopened → new
milestone To Be Determined → Boost 1.66.0

https://github.com/boostorg/format/pull/21 merged into develop leaving open until merged into master

status changed

James E. King, III — Wed, 18 Oct 2017 19:16:30 GMT

status new → assigned

status changed; resolution set

James E. King, III — Fri, 20 Oct 2017 16:22:30 GMT

status assigned → closed
resolution → fixed