Re: [xml] [PATCH] DSO/Module Support

[Joel Reed <joelwreed comcast net>]

On Tue, Dec 21, 2004 at 08:41:26PM +0100, Bjorn Reese wrote:
> Joel Reed wrote:
>
> > +void* xmlModulePlatformSymbol(void* handle, const char* name)
> > +{
> > +  void* sym;
> > +  sym = dlsym(handle, name);
> > +  return (sym);
> While dlsym() returns NULL on error, it can also return NULL as a valid
> address. The way you distinguish between these two conditions is to call
> dlerror(). If dlerror() returns NULL, then the address is valid, 
> otherwise it
> is not.

thanks for pointing this out. i was about to address this, but noticed
that NULL is a not valid address on win32, so in the interest of promoting
cross-platform compatability in a library that's known for its
cross-platform compatability, and given this would seem to be a corner
case not frequently used, it seems better to leave as-is.

jr

ref: http://msdn.microsoft.com/library/en-us/dllproc/base/getprocaddress.asp?frame=true