dolfin team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

On Sat, Jun 16, 2007 at 04:01:29PM +0200, Garth N. Wells wrote:
> Quoting Anders Logg <logg@xxxxxxxxx>:
> 
> > On Sat, Jun 16, 2007 at 12:00:01AM +0200, Garth N. Wells wrote:
> > 
> > > Is there a C++ alternative to using the function "vsnprintf" (it's used on
> > > log.cpp and XMLFile.cpp and perhaps elsewhere). The problem is that it
> > gives a
> > > compile error under Cygwin. Quite a while ago a replaced "snprintf" with
> > some
> > > std::string functions to avoid this problem.
> > > 
> > > Garth
> > 
> > The only place where this is strictly needed is in log.cpp where one
> > needs to handle a variable number of arguments.
> > 
> > There are a few possible solutions:
> > 
> > 1. Does changing the include from <stdarg.h> to <stdarg> help?
> > stdarg.h is deprecated for C++ so this should be done anyway.
> >
> 
> No.
>  
> > 2. Does vsprintf() work as an alternative to vsnprintf()? 
> 
> Yes.
> 
> The
> > difference is that for vsnprintf() one can set a limit for the size of
> > the buffer used (but we can get around this by manually checking the
> > string length).
> >
> 
> vsnprintf() is not part of the ansi standard, so using the compiler option
> "-ansi" leads to the error with Cygwin.
> 
> In the past, I replaced snprintf() using std::ostringstream and std::string to
> avoid this problem. I can change the compile flags to avoid the error for now.
> 
> Garth

ok, if someone finds a C++ replacement for vsnprint() please let me
know and I can take care of log.cpp.

/Anders