Temporary header file '/tmp/O_LEd9dS3j/dump1.h' with the following content will be compiled to create GCC translation unit dump:

  // add defines
  #define __STDC_VERSION__ 201710L
#define _TIME_BITS 64
#define _FILE_OFFSET_BITS 64
#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/cppunit/AdditionalMessage.h"
  #include "/usr/include/cppunit/Asserter.h"
  #include "/usr/include/cppunit/BriefTestProgressListener.h"
  #include "/usr/include/cppunit/CompilerOutputter.h"
  #include "/usr/include/cppunit/Exception.h"
  #include "/usr/include/cppunit/Message.h"
  #include "/usr/include/cppunit/Outputter.h"
  #include "/usr/include/cppunit/Portability.h"
  #include "/usr/include/cppunit/Protector.h"
  #include "/usr/include/cppunit/SourceLine.h"
  #include "/usr/include/cppunit/SynchronizedObject.h"
  #include "/usr/include/cppunit/Test.h"
  #include "/usr/include/cppunit/TestAssert.h"
  #include "/usr/include/cppunit/TestCaller.h"
  #include "/usr/include/cppunit/TestCase.h"
  #include "/usr/include/cppunit/TestComposite.h"
  #include "/usr/include/cppunit/TestFailure.h"
  #include "/usr/include/cppunit/TestFixture.h"
  #include "/usr/include/cppunit/TestLeaf.h"
  #include "/usr/include/cppunit/TestListener.h"
  #include "/usr/include/cppunit/TestPath.h"
  #include "/usr/include/cppunit/TestResult.h"
  #include "/usr/include/cppunit/TestResultCollector.h"
  #include "/usr/include/cppunit/TestRunner.h"
  #include "/usr/include/cppunit/TestSuccessListener.h"
  #include "/usr/include/cppunit/TestSuite.h"
  #include "/usr/include/cppunit/TextOutputter.h"
  #include "/usr/include/cppunit/TextTestProgressListener.h"
  #include "/usr/include/cppunit/TextTestResult.h"
  #include "/usr/include/cppunit/TextTestRunner.h"
  #include "/usr/include/cppunit/XmlOutputter.h"
  #include "/usr/include/cppunit/XmlOutputterHook.h"
  #include "/usr/include/cppunit/config/CppUnitApi.h"
  #include "/usr/include/cppunit/config/SelectDllLoader.h"
  #include "/usr/include/cppunit/config/SourcePrefix.h"
  #include "/usr/include/cppunit/config/config-bcb5.h"
  #include "/usr/include/cppunit/config/config-evc4.h"
  #include "/usr/include/cppunit/config/config-mac.h"
  #include "/usr/include/cppunit/config/config-msvc6.h"
  #include "/usr/include/cppunit/config-auto.h"
  #include "/usr/include/cppunit/extensions/AutoRegisterSuite.h"
  #include "/usr/include/cppunit/extensions/ExceptionTestCaseDecorator.h"
  #include "/usr/include/cppunit/extensions/HelperMacros.h"
  #include "/usr/include/cppunit/extensions/Orthodox.h"
  #include "/usr/include/cppunit/extensions/RepeatedTest.h"
  #include "/usr/include/cppunit/extensions/TestCaseDecorator.h"
  #include "/usr/include/cppunit/extensions/TestDecorator.h"
  #include "/usr/include/cppunit/extensions/TestFactory.h"
  #include "/usr/include/cppunit/extensions/TestFactoryRegistry.h"
  #include "/usr/include/cppunit/extensions/TestFixtureFactory.h"
  #include "/usr/include/cppunit/extensions/TestNamer.h"
  #include "/usr/include/cppunit/extensions/TestSetUp.h"
  #include "/usr/include/cppunit/extensions/TestSuiteBuilderContext.h"
  #include "/usr/include/cppunit/extensions/TestSuiteFactory.h"
  #include "/usr/include/cppunit/extensions/TypeInfoHelper.h"
  #include "/usr/include/cppunit/plugin/DynamicLibraryManager.h"
  #include "/usr/include/cppunit/plugin/DynamicLibraryManagerException.h"
  #include "/usr/include/cppunit/plugin/PlugInManager.h"
  #include "/usr/include/cppunit/plugin/PlugInParameters.h"
  #include "/usr/include/cppunit/plugin/TestPlugIn.h"
  #include "/usr/include/cppunit/plugin/TestPlugInDefaultImpl.h"
  #include "/usr/include/cppunit/portability/FloatingPoint.h"
  #include "/usr/include/cppunit/portability/Stream.h"
  #include "/usr/include/cppunit/tools/Algorithm.h"
  #include "/usr/include/cppunit/tools/StringHelper.h"
  #include "/usr/include/cppunit/tools/StringTools.h"
  #include "/usr/include/cppunit/tools/XmlDocument.h"
  #include "/usr/include/cppunit/tools/XmlElement.h"
  #include "/usr/include/cppunit/ui/text/TestRunner.h"
  #include "/usr/include/cppunit/ui/text/TextTestRunner.h"

  // add namespaces
  namespace CppUnit{typedef int tmp_add_type_1;}
  CppUnit::tmp_add_type_1 tmp_add_func_1(){return 0;};
  namespace CppUnit{namespace StringHelper{typedef int tmp_add_type_2;}}
  CppUnit::StringHelper::tmp_add_type_2 tmp_add_func_2(){return 0;};
  namespace CppUnit{namespace TextUi{typedef int tmp_add_type_3;}}
  CppUnit::TextUi::tmp_add_type_3 tmp_add_func_3(){return 0;};

  // add classes
  CppUnitTestPlugIn* tmp_add_class_0;
  _G_fpos64_t* tmp_add_class_1;
  _G_fpos_t* tmp_add_class_2;
  _IO_cookie_io_functions_t* tmp_add_class_3;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/O_LEd9dS3j/dump1.h"