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X-HELO: calimero.vinschen.de
Date: Fri, 7 Mar 2014 21:08:32 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: strtold() availability
Message-ID: <20140307200832.GC2744@calimero.vinschen.de>
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On Mar  7 17:04, V=C3=A1clav Zeman wrote:
> Hi.
>=20
> This bit from /usr/include/stdlib.h hides the `strtold()` function
> even though the `strtold` symbol appears to be exported from
> `cygwin1.dll`:
>=20
> ~~~~{.c}
> /* On platforms where long double equals double.  */
> #ifdef _LDBL_EQ_DBL
> #if !defined(__STRICT_ANSI__) || (__STDC_VERSION__ >=3D 199901L) ||
> (__cplusplus >=3D 201103L)
> extern long double strtold (const char *__restrict, char **__restrict);
> #endif
> #endif /* _LDBL_EQ_DBL */
> ~~~~
>=20
> This in turn breaks my source because I cannot use `_GLIBCXX_USE_C99`
> to expose some C++11 features like `std::vsnprintf()`.
>=20
> Shouldn't the `_LDBL_EQ_DBL` guard be removed and the function exposed
> regardless of `double` and `long double` sizes?

I fixed that in newlib after a discussion with my co-maintainer.
strtold now gets defined if _HAVE_LONG_DOUBLE is defined.  This is
the case for Cygwin, for instance.


Thanks for the report,
Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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