Plugin that parse tree

[Daniel Marjamäki]

Hello!

I want to write a plugin that parse the AST. Could I get some hint
about how to do it?

I have been reading this excellent article:
http://codesynthesis.com/~boris/blog/2010/05/10/parsing-cxx-with-gcc-plugin-part-2/

The problem is that I fail to follow those advices.

I fail to use 'global_namespace':
daniel@daniel:~/gcc/build/gcc$ ./xgcc -fplugin=./myplugin2.so -c test1.c
cc1: error: cannot load plugin ./myplugin2.so
./myplugin2.so: undefined symbol: global_namespace

Here is the code:

#include "gcc-plugin.h"
#include "cp/cp-tree.h"
#include <stdio.h>

int plugin_is_GPL_compatible;

static void traverse(tree ns)
{
}

void override_gate(void *gcc_data, void *user_data)
{
    printf("myplugin1:override_gate\n");

    // Process AST
    traverse(global_namespace);
}

int
plugin_init (struct plugin_name_args *plugin_info,
             struct plugin_gcc_version *version)
{
    printf("myplugin1\n");

    register_callback(plugin_info->base_name,
                      PLUGIN_OVERRIDE_GATE,
                      &override_gate,
                      0);

    return 0;
}

Best regards,
Daniel Marjamäki