[boost] Serialization16 - xml_oarchive std::string representation

From: Robert Ramey (ramey_at_[hidden])
Date: 2004-02-17 12:00:38

Jeff Flinn wrote:

>Knowing next to nothing about xml, I'm surprised by xml archive file that
>I've generated which expresses std::string as in the following example:

><item>
>    <count>3</count>
>    <item>65</item>
>    <item>108</item>
>    <item>108</item>
></item>

>which corresponds to std::string("All")

>Is this intended? Is this representation configurable? The demo_file.xml
>does not use this representation, rather it generates strings in the form:

>    <street1>24th Street</street1>

>Needless to say the former representation is not very space efficient. For
>a text archive of 1.2MB I get an xml archive 21.5MB.

Hmmm were you sure to included boost/serialization/string.hpp (or maybe it
should be left out). In any case the intention is that strings be
automatically represented in a readable way and I would be curious as to how
you accidently managed to get around that code.

>I am unable to compile(VC7.1) the demo_xml_save project with the following
>error:

>Compiling...
>demo_xml_save.cpp
>c:\boost\boost_1_31_0\libs\serialization\example\demo_xml_save.cpp(20) :
>fatal error C1055: compiler limit : out of keys

This is an issue with the VC 7.1 compiler under the IDE.  I had the same
thing using VC 7.0 . Its amazing to me they could ship this product without
fixing this.  I love the MS IDE but it has lots of annoying features of this
type.

Anyway, this problem doesn't appear when you build with the command line.
Also I've had good luck in making it go away by cleaning the projects and
rebuilding.  If all else fails you can redefine certain macros such as
assert with something like:

#undef assert
#define assert(x) x

Which will effectively comment out the asserts which provoke the problem.

Robert Ramey