Re: [boost] [conversion] Need a help with MSVC failures

Subject: Re: [boost] [conversion] Need a help with MSVC failures
From: Antony Polukhin (antoshkka_at_[hidden])
Date: 2014-02-01 07:01:58

2014-01-31 Daniela Engert <dani_at_[hidden]>:

> Am 30.01.2014 06:24 schrieb Antony Polukhin:
> > >
> > Some of the tests for Boost.LexicalCast fail on any MSVC compiler.
> > Unfortunately currently I have no access to Windows.
>
> I can run as many tests with vc10, vc11 and vc12 for you as you like.
>
> This is one of the failing cases:
>
> -----------------------------------------------
> #include <boost/lexical_cast.hpp>
> #include <meerkat/StackWalker.hpp>
>
> meerkat::CatchUnhandledExceptions CrashHandler;
>
> int main() {
>     char A = boost::lexical_cast<char>("A");
> }
> -----------------------------------------------
>
> which causes
>
> *** Fri Jan 31 17:59:12 2014
> *** Unhandled Structured Exception C0000005 @ 0x000B1151 (continuable)
> Access denied while writing @ 0x00000000
> iosfwd (523): std::char_traits<char>::length + 0x3
> lexical_cast.hpp (1378):
>
> boost::detail::lexical_istream_limited_src<char,std::char_traits<char>,0,2>::shl_char_array
> + 0x9
> lexical_cast.hpp (1600):
>
> boost::detail::lexical_istream_limited_src<char,std::char_traits<char>,0,2>::operator<<
> + 0x2f
> lexical_cast.hpp (2083): boost::detail::lexical_converter_impl<char,char
> const *>::try_convert + 0xe
> lexical_cast.hpp (2301):
> boost::conversion::detail::try_lexical_convert<char,char const (&)[2]> +
> 0x1b
> lexical_cast.hpp (2328): boost::lexical_cast<char,char const [2]> + 0xd
> main.cpp (8): main + 0xa
> crtexe.c (536): __tmainCRTStartup + 0x19
> crtexe.c (377): mainCRTStartup
> 7704336A (kernel32): BaseThreadInitThunk + 0x12
> 77929F72 (ntdll): RtlInitializeExceptionChain + 0x63
> 77929F45 (ntdll): RtlInitializeExceptionChain + 0x36
> ***
>
> boost::detail::lexical_converter_impl<char,char const *>::try_convert's
> signature in line 2076 is bool(const char * const &, char &). 'arg' is
> 0x00000041.
>

That's a good place for me to start! Thanks for finding that out!

-- 
Best regards,
Antony Polukhin