jextract pthread error

jextract \
-I /usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/include \
--exclude-symbols "__pthread_unwind_next" \
--exclude-symbols "__pthread_register_cancel" \
--exclude-symbols "__pthread_unregister_cancel" \
/usr/include/pthread.h -t unix.pthread -o pthread.jar


WARNING: symbol __bswap_16 is not found in any library
WARNING: symbol __bswap_32 is not found in any library
WARNING: symbol __bswap_64 is not found in any library
WARNING: symbol __uint16_identity is not found in any library
WARNING: symbol __uint32_identity is not found in any library
WARNING: symbol __uint64_identity is not found in any library
WARNING: symbol timer_create is not found in any library
WARNING: symbol timer_delete is not found in any library
WARNING: symbol timer_settime is not found in any library
WARNING: symbol timer_gettime is not found in any library
WARNING: symbol timer_getoverrun is not found in any library
WARNING: symbol pthread_atfork is not found in any library
Cannot write source file unix.pthread.bits.thread_shared_types_h, cause: jdk.internal.clang.TypeLayoutError: InvalidFieldName. type: Type{ spelling=struct __pthread_cond_s, kind=Record }, fieldName: __low
Tree causing above exception is: __pthread_cond_s
  ------------------------
  Cursor: __pthread_cond_s
  Kind: StructDecl
  Location: /usr/include/bits/thread-shared-types.h@171:8
  Is system header? true
  Is from main file? false
  == Type ==
  Type: struct __pthread_cond_s
  Type Kind: Record
  Declared by cursor: __pthread_cond_s of kind StructDecl
  Location: /usr/include/bits/thread-shared-types.h@171:8
  Is system header? true
  Is from main file? false
  Declaring cursor is definition? true
  Size: 48 bytes
  Is this cursor definition? true

Ignoring duplicate symbol: PTHREAD_CREATE_JOINABLE
Ignoring duplicate symbol: PTHREAD_CREATE_DETACHED
Ignoring duplicate symbol: PTHREAD_CREATE_JOINABLE
Ignoring duplicate symbol: PTHREAD_CREATE_DETACHED
Ignoring duplicate symbol: PTHREAD_INHERIT_SCHED
Ignoring duplicate symbol: PTHREAD_EXPLICIT_SCHED
Ignoring duplicate symbol: PTHREAD_INHERIT_SCHED
Ignoring duplicate symbol: PTHREAD_EXPLICIT_SCHED
Ignoring duplicate symbol: PTHREAD_SCOPE_SYSTEM
Ignoring duplicate symbol: PTHREAD_SCOPE_PROCESS
Ignoring duplicate symbol: PTHREAD_SCOPE_SYSTEM
Ignoring duplicate symbol: PTHREAD_SCOPE_PROCESS
Ignoring duplicate symbol: PTHREAD_PROCESS_PRIVATE
Ignoring duplicate symbol: PTHREAD_PROCESS_SHARED
Ignoring duplicate symbol: PTHREAD_PROCESS_PRIVATE
Ignoring duplicate symbol: PTHREAD_PROCESS_SHARED
Ignoring duplicate symbol: PTHREAD_CANCEL_ENABLE
Ignoring duplicate symbol: PTHREAD_CANCEL_DISABLE
Ignoring duplicate symbol: PTHREAD_CANCEL_ENABLE
Ignoring duplicate symbol: PTHREAD_CANCEL_DISABLE
Ignoring duplicate symbol: PTHREAD_CANCEL_DEFERRED
Ignoring duplicate symbol: PTHREAD_CANCEL_ASYNCHRONOUS
Ignoring duplicate symbol: PTHREAD_CANCEL_DEFERRED
Ignoring duplicate symbol: PTHREAD_CANCEL_ASYNCHRONOUS
Cannot write source file unix.pthread.pthread_h, cause: jdk.internal.clang.TypeLayoutError: InvalidFieldName. type: Type{ spelling=__pthread_unwind_buf_t, kind=Record }, fieldName: __mask_was_saved
Tree causing above exception is: __pthread_unwind_buf_t
  ------------------------
  Cursor:
  Kind: StructDecl
  Location: /usr/include/pthread.h@524:9
  Is system header? false
  Is from main file? true
  == Type ==
  Type: __pthread_unwind_buf_t
  Type Kind: Record
  Declared by cursor:  of kind StructDecl
  Location: /usr/include/pthread.h@524:9
  Is system header? false
  Is from main file? true
  Declaring cursor is definition? true
  Size: 104 bytes
  Is this cursor definition? true

Exception in thread "main" java.lang.RuntimeException: In memory compilation failed: /unix/pthread/bits/pthreadtypes_h.java:133: error: cannot find symbol
        public unix.pthread.bits.thread_shared_types_h.__pthread_cond_s __data$get();
                                                      ^
  symbol:   class __pthread_cond_s
  location: interface thread_shared_types_h
/unix/pthread/bits/pthreadtypes_h.java:136: error: cannot find symbol
        public void __data$set(unix.pthread.bits.thread_shared_types_h.__pthread_cond_s value);
                                                                      ^
  symbol:   class __pthread_cond_s
  location: interface thread_shared_types_h
/unix/pthread/bits/pthreadtypes_h.java:139: error: cannot find symbol
        public java.foreign.memory.Pointer<unix.pthread.bits.thread_shared_types_h.__pthread_cond_s> __data$ptr();
                                                                                  ^
  symbol:   class __pthread_cond_s
  location: interface thread_shared_types_h
3 errors

        at jdk.jextract/com.sun.tools.jextract.InMemoryJavaCompiler.compile(InMemoryJavaCompiler.java:59)
        at jdk.jextract/com.sun.tools.jextract.Writer.ensureSourcesCompiled(Writer.java:49)
        at jdk.jextract/com.sun.tools.jextract.Writer.writeJar(Writer.java:115)
        at jdk.jextract/com.sun.tools.jextract.Main.runInternal(Main.java:342)
        at jdk.jextract/com.sun.tools.jextract.Main.run(Main.java:211)
        at jdk.jextract/com.sun.tools.jextract.Main.main(Main.java:352)