Compiler warnings during build

[PhilterPaper]

Long-time compile warnings that should be dealt with some day:

gcc -c -I"." -s -O2 -DWIN32 -DWIN64 -DCONSERVATIVE -D__USE_MINGW_ANSI_STDIO -DPERL_TEXTMODE_SCRIPTS -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DUSE_PERLIO -fwrapv -fno-strict-aliasing -mms-bitfields -s -O2 "-DVERSION=\"1.06\"" "-DXS_VERSION=\"1.06\"" -I"C:\STRAWB~1\perl\lib\CORE" -I"C:\STRAWB~1\c\include" -o "lib\Text\KnuthPlass.o" "lib\Text\KnuthPlass.c"
In file included from C:\STRAWB~1\perl\lib\CORE/perl.h:5644:0,
                 from lib\\Text\\KnuthPlass.xs:2:
lib\\Text\\KnuthPlass.xs: In function 'XS_Text__KnuthPlass__init_nodelist':
C:\STRAWB~1\perl\lib\CORE/hv.h:480:10: warning: passing argument 6 of 'Perl_hv_common_key_len' makes pointer from integer without a cast [-Wint-conversion]
          (val), (hash)))
          ^
C:\STRAWB~1\perl\lib\CORE/embed.h:228:77: note: in definition of macro 'hv_common_key_len'
 #define hv_common_key_len(a,b,c,d,e,f) Perl_hv_common_key_len(aTHX_ a,b,c,d,e,f)
                                                                             ^
C:\STRAWB~1\perl\lib\CORE/hv.h:512:5: note: in expansion of macro 'hv_store'
     hv_store((hv), ("" key ""), (sizeof(key)-1), (val), 0)
     ^~~~~~~~
lib\\Text\\KnuthPlass.xs:153:5: note: in expansion of macro 'hv_stores'
     hv_stores((HV*)self, "activeNodes", ((IV)activelist));
     ^
In file included from C:\STRAWB~1\perl\lib\CORE/perl.h:5609:0,
                 from lib\\Text\\KnuthPlass.xs:2:
C:\STRAWB~1\perl\lib\CORE/proto.h:1172:21: note: expected 'SV * {aka struct sv *}' but argument is of type 'long long int'
 PERL_CALLCONV void* Perl_hv_common_key_len(pTHX_ HV *hv, const char *key, I32 klen_i32, const int action, SV *val, const U32 hash);
                     ^~~~~~~~~~~~~~~~~~~~~~
ExtUtils::Mkbootstrap::Mkbootstrap('blib\arch\auto\Text\KnuthPlass\KnuthPlass.bs')
Generating script 'lib\Text\KnuthPlass.lds'
dlltool --def "lib\Text\KnuthPlass.def" --output-exp "lib\Text\KnuthPlass.exp"
g++ -o "blib\arch\auto\Text\KnuthPlass\KnuthPlass.xs.dll" -Wl,--base-file,"lib\Text\KnuthPlass.base" -Wl,--enable-auto-image-base -mdll -s -L"C:\STRAWB~1\perl\lib\CORE" -L"C:\STRAWB~1\c\lib" "lib\Text\KnuthPlass.lds" "lib\Text\KnuthPlass.exp"
dlltool --def "lib\Text\KnuthPlass.def" --output-exp "lib\Text\KnuthPlass.exp" --base-file "lib\Text\KnuthPlass.base"
g++ -o "blib\arch\auto\Text\KnuthPlass\KnuthPlass.xs.dll" -Wl,--enable-auto-image-base -mdll -s -L"C:\STRAWB~1\perl\lib\CORE" -L"C:\STRAWB~1\c\lib" "lib\Text\KnuthPlass.lds" "lib\Text\KnuthPlass.exp"

I'm not sure if there are two, or just one, separate errors here. This is the "cpan" build from Strawberry Perl (Windows) 5.26.1. It builds and runs, but it would just be nice to have a clean build.

[PhilterPaper]

Does anyone else get different warnings and/or errors on other Perl versions, or non-Strawberry installations?

[PhilterPaper]

Looking over the error messages again, I'm wondering if this might even be a shortcoming in Strawberry's implementation of the C/C++ libraries, rather than something in the Text-KnuthPlass code? Another deep dive into the code is needed...

[PhilterPaper]

With help from @sisyphus in StrawberryPerl/Perl-Dist-Strawberry#34, I was able to change

     hv_stores((HV*)self, "activeNodes", ((IV)activelist));

to

     hv_stores((HV*)self, "activeNodes", ((SV *)activelist));

and now it compiles cleanly without warnings (t-tests and examples work, too).