weird

skarsnik@vps300582:/tmp/gptrixie$ perl6 -I ../exemel/lib/ -I lib bin/gptrixie --all /usr/local/include/gumbo.h 
...
sub gumbo_normalized_tagname(int32 $tag) is native(LIB) returns Pointer[int8] is export { * }
sub gumbo_string_equals_ignore_case(Pointer[GumboStringPiece] $str1, Pointer[GumboStringPiece] $str2) is native(LIB) returns bool is export { * }
sub gumbo_tag_from_original_text(Pointer[GumboStringPiece] $text) is native(LIB)  is export { * }
sub gumbo_vector_index_of(Pointer[GumboVector] $vector, Pointer[] $element) is native(LIB) returns int32 is export { * }
sub gumbo_tagn_enum(Pointer[int8] $tagname, uint32 $length) is native(LIB) returns int32 is export { * }
sub gumbo_parse(Pointer[int8] $buffer) is native(LIB) returns Pointer[GumboInternalOutput] is export { * }
sub gumbo_tag_enum(Pointer[int8] $tagname) is native(LIB) returns int32 is export { * }
sub gumbo_string_equals(Pointer[GumboStringPiece] $str1, Pointer[GumboStringPiece] $str2) is native(LIB) returns bool is export { * }
sub gumbo_normalize_svg_tagname(Pointer[GumboStringPiece] $tagname) is native(LIB) returns Pointer[int8] is export { * }
sub gumbo_parse_with_options(Pointer[GumboInternalOptions] $options, Pointer[int8] $buffer, size_t $buffer_length) is native(LIB) returns Pointer[GumboInternalOutput] is export { * }
## Externs
our GumboInternalOptions $kGumboDefaultOptions is export = cglobals(LIB, "kGumboDefaultOptions", GumboInternalOptions);
our GumboStringPiece $kGumboEmptyString is export = cglobals(LIB, "kGumboEmptyString", GumboStringPiece);
our GumboVector $kGumboEmptyVector is export = cglobals(LIB, "kGumboEmptyVector", GumboVector);
our GumboSourcePosition $kGumboEmptySourcePosition is export = cglobals(LIB, "kGumboEmptySourcePosition", GumboSourcePosition);
skarsnik@vps300582:/tmp/gptrixie$ perl6  -I lib bin/gptrixie --all /usr/local/include/gumbo.h 
BEGIN
Calling GCCXML : gccxml /usr/local/include/gumbo.h -fxml=plop.xml
Parsing the XML file
Segmentation fault
skarsnik@vps300582:/tmp/gptrixie$ perl6 -I ../exemel/lib/ -I lib bin/gptrixie --all /usr/local/include/gumbo.h 
BEGIN
Segmentation fault
skarsnik@vps300582:/tmp/gptrixie$ perl6 -I ../exemel/lib/ -I lib bin/gptrixie --all /usr/local/include/gumbo.h 
BEGIN
Segmentation fault
skarsnik@vps300582:/tmp/gptrixie$ perl6  -I lib bin/gptrixie --all /usr/local/include/gumbo.h 
BEGIN
Segmentation fault
skarsnik@vps300582:/tmp/gptrixie$ perl6 --version
This is Rakudo version 2017.08 built on MoarVM version 2017.08.1
implementing Perl 6.c.