http://gcc.gnu.org/gcc-4.9/porting_to.html
See extract below:
The <cstddef> header was updated for C++11 support and this breaks some
libraries which misuse macros meant for internal use by GCC only. For
instance with GMP versions up to 5.1.3, you may see:
/usr/include/c++/4.9.0/cstddef:51:11: error: ‘::max_align_t’ has not been declared
using ::max_align_t;
^
Another possible error is:
someheader.h:99:13: error: ‘ptrdiff_t’ does not name a type
A workaround until libraries get updated is to include <cstddef> or
<stddef.h> before any headers from that library.
sha1.cc is not redistributable by Debian because the license doesn't
permit redistribution of modified versions.
This isn't ideal since the ::details namespace is subject to change,
but it avoids adding a dependency to ledger.
As the format used by property trees to represent valid JSON
and that for valid XML is too different and given that there are
more requests for valid XML output I decided to pursue a quick fix
and remove the json command in favor of a working xml command.
See bug #782, #909, recent discussion on mailing list.
JSON support is postponed until I or someone else finds time to work on
this or the python bindings are more stable.
This is to work around undefined behavior according to the Standard,
[lib.res.on.functions]/2:
"In particular, the effects are undefined in the following cases: [..]
- if an incomplete type (3.9) is used as a template argument when
instantiating a template component."
The code now uses Boost's input and output facets for times and dates.
This ensures completely consistency regarding timezones and times, and
fixes the regression test that was broken while I was away coding in
London (where it was GMT-0 and I didn't notice the difference between
local and GMT).