Bug 715129

gengtype / gengtype.state just aren't installed upstream nor downstream, see:
http://gcc.gnu.org/ml/gcc/2010-12/msg00087.html
for some details.

Anyway, as I wrote on gcc@, if you don't use GTY(()) markers in the plugin code
and all the additional GC roots you need are embedded inside of python objects you can easily programmatically walk, then you don't need gengtype + gengtype.state at all.

#include "ggc.h"

static void my_walker (void *arg ATTRIBUTE_UNUSED)
{
  /* Ignore argument, as it is dummy */
  /* Walk all the still live python objects here and if they reference
     GCC GC objects, call
  ggc_mark (ptr);
     on each of them.  */
}

static struct ggc_root_tab myroot = { "", 1, 1, my_walker, NULL };

...
init_plugin (...)
{
...
  ggc_register_root_tab (&myroot);
...
}

Thanks.  FWIW, I implemented something like this in 
http://git.fedorahosted.org/git/?p=gcc-python-plugin.git;a=commitdiff;h=58d65a1b353220efbcf8d908b0946ef5d1c4fafd

though ggc_mark() seemed to be wrong: it only sets the mark on one object, and doesn't recurse over the unmarked things to which it refers.  In my version, I use gt_ggc_mx_NAME_OF_TYPE() on each wrapped object, which I hope is the correct approach.

This bug appears to have been reported against 'rawhide' during the Fedora 19 development cycle.
Changing version to '19'.

(As we did not run this process for some time, it could affect also pre-Fedora 19 development
cycle bugs. We are very sorry. It will help us with cleanup during Fedora 19 End Of Life. Thank you.)

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