Temporary header file '/tmp/KeOrRoRfWF/dump1.h' with the following content will be compiled to create GCC translation unit dump:

  // add defines
  #define __STDC_VERSION__ 201710L
#define _GXX_NULLPTR_T
#define CLUTTER_ENABLE_COMPOSITOR_API 1
#define _REGEX_NELTS(n)
#define _Atomic
#define PACKED
#define getaddrinfo_a(a,b,c,d)

  // add includes
  #include "/usr/include/avl.h"

  // add classes
  avl_node_t* tmp_add_class_0;
  avl_tree_t* tmp_add_class_1;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/KeOrRoRfWF/dump1.h"

In file included from /tmp/KeOrRoRfWF/dump1.h:12:
/usr/include/avl.h:126:81: error: expected ‘,’ or ‘...’ before ‘new’
  126 | extern avl_node_t *avl_insert_before(avl_tree_t *, avl_node_t *old, avl_node_t *new);
      |                                                                                 ^~~
/usr/include/avl.h:131:80: error: expected ‘,’ or ‘...’ before ‘new’
  131 | extern avl_node_t *avl_insert_after(avl_tree_t *, avl_node_t *old, avl_node_t *new);
      |                                                                                ^~~
/usr/include/avl.h:155:61: error: expected ‘,’ or ‘...’ before ‘new’
  155 | extern avl_node_t *avl_fixup_node(avl_tree_t *, avl_node_t *new);
      |                                                             ^~~