Temporary header file '/tmp/qWv1UXQqAt/dump1.h' with the following content will be compiled to create GCC translation unit dump:

  // add defines
  #define __STDC_VERSION__ 201710L
#define _FILE_OFFSET_BITS 64
#define _GXX_NULLPTR_T
#define CLUTTER_ENABLE_COMPOSITOR_API 1
#define _REGEX_NELTS(n)
#define _Atomic
#define PACKED
#ifdef __cplusplus
// C17 compat layer
#define _Alignof(type) alignof(type)
#endif
#define getaddrinfo_a(a,b,c,d)

  // add includes
  #include "/usr/include/lttoolbox/acx.h"
  #include "/usr/include/lttoolbox/alphabet.h"
  #include "/usr/include/lttoolbox/att_compiler.h"
  #include "/usr/include/lttoolbox/buffer.h"
  #include "/usr/include/lttoolbox/cli.h"
  #include "/usr/include/lttoolbox/compiler.h"
  #include "/usr/include/lttoolbox/compression.h"
  #include "/usr/include/lttoolbox/deserialiser.h"
  #include "/usr/include/lttoolbox/entry_token.h"
  #include "/usr/include/lttoolbox/exception.h"
  #include "/usr/include/lttoolbox/expander.h"
  #include "/usr/include/lttoolbox/file_utils.h"
  #include "/usr/include/lttoolbox/fst_processor.h"
  #include "/usr/include/lttoolbox/input_file.h"
  #include "/usr/include/lttoolbox/lt_locale.h"
  #include "/usr/include/lttoolbox/match_exe.h"
  #include "/usr/include/lttoolbox/match_node.h"
  #include "/usr/include/lttoolbox/match_state.h"
  #include "/usr/include/lttoolbox/my_stdio.h"
  #include "/usr/include/lttoolbox/node.h"
  #include "/usr/include/lttoolbox/pattern_list.h"
  #include "/usr/include/lttoolbox/regexp_compiler.h"
  #include "/usr/include/lttoolbox/serialiser.h"
  #include "/usr/include/lttoolbox/sorted_vector.h"
  #include "/usr/include/lttoolbox/sorted_vector.hpp"
  #include "/usr/include/lttoolbox/state.h"
  #include "/usr/include/lttoolbox/string_utils.h"
  #include "/usr/include/lttoolbox/tmx_compiler.h"
  #include "/usr/include/lttoolbox/trans_exe.h"
  #include "/usr/include/lttoolbox/transducer.h"
  #include "/usr/include/lttoolbox/ustring.h"
  #include "/usr/include/lttoolbox/xml_parse_util.h"
  #include "/usr/include/lttoolbox/xml_walk_util.h"

  // add namespaces
  namespace detail{typedef int tmp_add_type_1;}
  detail::tmp_add_type_1 tmp_add_func_1(){return 0;};
  namespace utf8{typedef int tmp_add_type_2;}
  utf8::tmp_add_type_2 tmp_add_func_2(){return 0;};
  namespace utf8{namespace internal{typedef int tmp_add_type_3;}}
  utf8::internal::tmp_add_type_3 tmp_add_func_3(){return 0;};
  namespace utf8{namespace unchecked{typedef int tmp_add_type_4;}}
  utf8::unchecked::tmp_add_type_4 tmp_add_func_4(){return 0;};
  namespace icu_72{typedef int tmp_add_type_5;}
  icu_72::tmp_add_type_5 tmp_add_func_5(){return 0;};

  // add classes
  Alphabet* tmp_add_class_0;
  AttCompiler* tmp_add_class_1;
  CLI* tmp_add_class_2;
  Compiler* tmp_add_class_3;
  Compression* tmp_add_class_4;
  DeserialisationException* tmp_add_class_5;
  Dest* tmp_add_class_6;
  EntryToken* tmp_add_class_7;
  Exception* tmp_add_class_8;
  Expander* tmp_add_class_9;
  FSTProcessor* tmp_add_class_10;
  IOException* tmp_add_class_11;
  InputFile* tmp_add_class_12;
  LtLocale* tmp_add_class_13;
  MatchExe* tmp_add_class_14;
  MatchNode* tmp_add_class_15;
  MatchState* tmp_add_class_16;
  Node* tmp_add_class_17;
  PatternList* tmp_add_class_18;
  RegexpCompiler* tmp_add_class_19;
  SerialisationException* tmp_add_class_20;
  SortedVector* tmp_add_class_21;
  State* tmp_add_class_22;
  StringUtils* tmp_add_class_23;
  TMXCompiler* tmp_add_class_24;
  TransExe* tmp_add_class_25;
  Transducer* tmp_add_class_26;
  UFieldPosition* tmp_add_class_27;
  UParseError* tmp_add_class_28;
  UReplaceableCallbacks* tmp_add_class_29;
  USerializedSet* tmp_add_class_30;
  UTransPosition* tmp_add_class_31;
  XMLParseUtil* tmp_add_class_32;
  _G_fpos64_t* tmp_add_class_33;
  _G_fpos_t* tmp_add_class_34;
  _IO_cookie_io_functions_t* tmp_add_class_35;
  _uconv_t* tmp_add_class_36;
  _xlinkHandler* tmp_add_class_37;
  _xmlAttr* tmp_add_class_38;
  _xmlAttribute* tmp_add_class_39;
  _xmlBuffer* tmp_add_class_40;
  _xmlCharEncodingHandler* tmp_add_class_41;
  _xmlDOMWrapCtxt* tmp_add_class_42;
  _xmlDoc* tmp_add_class_43;
  _xmlDtd* tmp_add_class_44;
  _xmlElement* tmp_add_class_45;
  _xmlElementContent* tmp_add_class_46;
  _xmlEntity* tmp_add_class_47;
  _xmlEnumeration* tmp_add_class_48;
  _xmlError* tmp_add_class_49;
  _xmlGlobalState* tmp_add_class_50;
  _xmlID* tmp_add_class_51;
  _xmlNode* tmp_add_class_52;
  _xmlNotation* tmp_add_class_53;
  _xmlNs* tmp_add_class_54;
  _xmlOutputBuffer* tmp_add_class_55;
  _xmlParserCtxt* tmp_add_class_56;
  _xmlParserInput* tmp_add_class_57;
  _xmlParserInputBuffer* tmp_add_class_58;
  _xmlParserNodeInfo* tmp_add_class_59;
  _xmlParserNodeInfoSeq* tmp_add_class_60;
  _xmlRef* tmp_add_class_61;
  _xmlSAXHandler* tmp_add_class_62;
  _xmlSAXHandlerV1* tmp_add_class_63;
  _xmlSAXLocator* tmp_add_class_64;
  _xmlValidCtxt* tmp_add_class_65;
  children* tmp_add_class_66;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/qWv1UXQqAt/dump1.h"  -I/usr/include/libxml2