Temporary header file '/tmp/EvWUtco0k7/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/stdlib.h"
  #include "/usr/include/lv2dynparam1/lv2dynparam/audiolock.h"
  #include "/usr/include/lv2dynparam1/lv2dynparam/host.h"
  #include "/usr/include/lv2dynparam1/lv2dynparam/lv2_rtmempool.h"
  #include "/usr/include/lv2dynparam1/lv2dynparam/lv2dynparam.h"
  #include "/usr/include/lv2dynparam1/lv2dynparam/plugin.h"

  // add classes
  _audiolock_handle* tmp_add_class_0;
  lv2_rtsafe_memory_pool_provider* tmp_add_class_1;
  lv2dynparam_hints* tmp_add_class_2;
  lv2dynparam_host_callbacks* tmp_add_class_3;
  lv2dynparam_host_parameter_range* tmp_add_class_4;
  lv2dynparam_host_parameter_value* tmp_add_class_5;
  lv2dynparam_plugin_callbacks* tmp_add_class_6;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/EvWUtco0k7/dump1.h"

In file included from /tmp/EvWUtco0k7/dump1.h:14:
/usr/include/lv2dynparam1/lv2dynparam/host.h:141:9: error: ‘LV2_Descriptor’ does not name a type
  141 |   const LV2_Descriptor * lv2descriptor,
      |         ^~~~~~~~~~~~~~
/usr/include/lv2dynparam1/lv2dynparam/host.h:142:3: error: ‘LV2_Handle’ has not been declared
  142 |   LV2_Handle lv2instance,
      |   ^~~~~~~~~~
In file included from /tmp/EvWUtco0k7/dump1.h:16:
/usr/include/lv2dynparam1/lv2dynparam/lv2dynparam.h:323:5: error: ‘LV2_Handle’ has not been declared
  323 |     LV2_Handle instance,
      |     ^~~~~~~~~~
In file included from /tmp/EvWUtco0k7/dump1.h:17:
/usr/include/lv2dynparam1/lv2dynparam/plugin.h:64:3: error: ‘LV2_Handle’ was not declared in this scope
   64 |   LV2_Handle instance,
      |   ^~~~~~~~~~
/usr/include/lv2dynparam1/lv2dynparam/plugin.h:65:3: error: expected primary-expression before ‘const’
   65 |   const LV2_Feature * const * host_features_ptr_ptr,
      |   ^~~~~
/usr/include/lv2dynparam1/lv2dynparam/plugin.h:66:3: error: expected primary-expression before ‘const’
   66 |   const char * root_group_name,
      |   ^~~~~
/usr/include/lv2dynparam1/lv2dynparam/plugin.h:67:31: error: expected primary-expression before ‘*’ token
   67 |   lv2dynparam_plugin_instance * instance_ptr);
      |                               ^
/usr/include/lv2dynparam1/lv2dynparam/plugin.h:67:33: error: ‘instance_ptr’ was not declared in this scope
   67 |   lv2dynparam_plugin_instance * instance_ptr);
      |                                 ^~~~~~~~~~~~