Compiler does not recognize keywords in confess_at calls in XSP files about prusaslicer HOT 6 CLOSED

%name{Slic3r::Config::Static} class StaticPrintConfig {
    static StaticPrintConfig* new_GCodeConfig()
        %code{% RETVAL = new GCodeConfig (); %};
    static StaticPrintConfig* new_PrintConfig()
        %code{% RETVAL = new PrintConfig (); %};
    static StaticPrintConfig* new_PrintObjectConfig()
        %code{% RETVAL = new PrintObjectConfig (); %};
    static StaticPrintConfig* new_PrintRegionConfig()
        %code{% RETVAL = new PrintRegionConfig (); %};
    static StaticPrintConfig* new_FullPrintConfig()
        %code{% RETVAL = new FullPrintConfig (); %};
    ~StaticPrintConfig();
    bool has(t_config_option_key opt_key);
    SV* as_hash()
        %code{% RETVAL = ConfigBase__as_hash(THIS); %};
    SV* get(t_config_option_key opt_key)
        %code{% RETVAL = ConfigBase__get(THIS, opt_key); %};
    SV* get_at(t_config_option_key opt_key, int i)
        %code{% RETVAL = ConfigBase__get_at(THIS, opt_key, i); %};
    bool set(t_config_option_key opt_key, SV* value)
        %code{% RETVAL = StaticConfig__set(THIS, opt_key, value); %};
    bool set_deserialize(t_config_option_key opt_key, SV* str)
        %code{% RETVAL = ConfigBase__set_deserialize(THIS, opt_key, str); %};
    void set_ifndef(t_config_option_key opt_key, SV* value, bool deserialize = false)
        %code{% ConfigBase__set_ifndef(THIS, opt_key, value, deserialize); %};
    std::string serialize(t_config_option_key opt_key);
    double get_abs_value(t_config_option_key opt_key);
    %name{get_abs_value_over}
        double get_abs_value(t_config_option_key opt_key, double ratio_over);
    void apply_static(StaticPrintConfig* other)
        %code{% THIS->apply(*other, true); %};
    void apply_dynamic(DynamicPrintConfig* other)
        %code{% THIS->apply(*other, true); %};
    %name{get_keys} std::vector<std::string> keys();
    std::string get_extrusion_axis()
        %code{%
            if (GCodeConfig* config = dynamic_cast<GCodeConfig*>(THIS)) {
                RETVAL = config->get_extrusion_axis();
            } else {
                //CONFESS("This StaticConfig object does not provide get_extrusion_axis()");
                confess_at(__FILE__,395,"get_extrusion_axis()","This StaticConfig object does not provide get_extrusion_axis()");
                confess_at("Config.xsp",__LINE__,"get_extrusion_axis()","This StaticConfig object does not provide get_extrusion_axis()");
                confess_at("Config.xsp",395,__FUNCTION__","This StaticConfig object does not provide get_extrusion_axis()");
                confess_at("Config.xsp",395,"get_extrusion_axis()","This StaticConfig object does not provide get_extrusion_axis()");
            }
        %};
    %name{setenv} void setenv_();
    double min_object_distance();
};

And here is the build output, first at point where the code generation/compile error occurs, then before it dies trying to generate the dll file.

...
buildtmp\XS.c(5561) : warning C4267: 'initializing' : conversion from 'size_t' to 'const unsigned int', possible loss of data
buildtmp\XS.c(6189) : warning C4800: 'UV' : forcing value to bool 'true' or 'false' (performance warning)
buildtmp\XS.c(6480) : warning C4267: 'initializing' : conversion from 'size_t' to 'const unsigned int', possible loss of data
c:\\wperl64r\\bin\\perl.exe -MExtUtils::XSpp::Cmd -e xspp -- -t "C:/Users/bwbeall/Downloads/Downloads/slic3r/Slic3r-master/xs/xsp/typemap.xspt"  "C:/Users/bwbeall/Downloads/Downloads/slic3r/Slic3r-master/xs/xsp/Config.xsp"(396) : error C2146: syntax error : missing ')' before identifier 'C'
c:\\wperl64r\\bin\\perl.exe -MExtUtils::XSpp::Cmd -e xspp -- -t "C:/Users/bwbeall/Downloads/Downloads/slic3r/Slic3r-master/xs/xsp/typemap.xspt"  "C:/Users/bwbeall/Downloads/Downloads/slic3r/Slic3r-master/xs/xsp/Config.xsp"(396) : error C2660: 'confess_at' : function does not take 1 arguments
c:\\wperl64r\\bin\\perl.exe -MExtUtils::XSpp::Cmd -e xspp -- -t "C:/Users/bwbeall/Downloads/Downloads/slic3r/Slic3r-master/xs/xsp/typemap.xspt"  "C:/Users/bwbeall/Downloads/Downloads/slic3r/Slic3r-master/xs/xsp/Config.xsp"(396) : error C2059: syntax error : ')'
c:\\wperl64r\\bin\\perl.exe -MExtUtils::XSpp::Cmd -e xspp -- -t "C:/Users/bwbeall/Downloads/Downloads/slic3r/Slic3r-master/xs/xsp/typemap.xspt"  "C:/Users/bwbeall/Downloads/Downloads/slic3r/Slic3r-master/xs/xsp/Config.xsp"(398) : error C2146: syntax error : missing ')' before identifier 'This'
c:\\wperl64r\\bin\\perl.exe -MExtUtils::XSpp::Cmd -e xspp -- -t "C:/Users/bwbeall/Downloads/Downloads/slic3r/Slic3r-master/xs/xsp/typemap.xspt"  "C:/Users/bwbeall/Downloads/Downloads/slic3r/Slic3r-master/xs/xsp/Config.xsp"(398) : error C2660: 'confess_at' : function does not take 3 arguments
c:\\wperl64r\\bin\\perl.exe -MExtUtils::XSpp::Cmd -e xspp -- -t "C:/Users/bwbeall/Downloads/Downloads/slic3r/Slic3r-master/xs/xsp/typemap.xspt"  "C:/Users/bwbeall/Downloads/Downloads/slic3r/Slic3r-master/xs/xsp/Config.xsp"(398) : error C2001: newline in constant
c:\\wperl64r\\bin\\perl.exe -MExtUtils::XSpp::Cmd -e xspp -- -t "C:/Users/bwbeall/Downloads/Downloads/slic3r/Slic3r-master/xs/xsp/typemap.xspt"  "C:/Users/bwbeall/Downloads/Downloads/slic3r/Slic3r-master/xs/xsp/Config.xsp"(525) : warning C4267: 'argument' : conversion from 'size_t' to 'I32', possible loss of data
buildtmp\XS.c(7058) : warning C4244: 'initializing' : conversion from '__int64' to 'const unsigned int', possible loss of data
buildtmp\XS.c(7463) : warning C4244: 'initializing' : conversion from '__int64' to 'const unsigned int', possible loss of data
buildtmp\XS.c(7469) : warning C4244: '=' : conversion from 'UV' to 'unsigned int', possible loss of data

...

buildtmp\XS.c(41310) : warning C4267: 'initializing' : conversion from 'size_t' to 'const unsigned int', possible loss of data
buildtmp\XS.c(41449) : warning C4800: 'UV' : forcing value to bool 'true' or 'false' (performance warning)
buildtmp\XS.c(41491) : warning C4800: 'UV' : forcing value to bool 'true' or 'false' (performance warning)
c:\\wperl64r\\bin\\perl.exe -MExtUtils::XSpp::Cmd -e xspp -- -t "C:/Users/bwbeall/Downloads/Downloads/slic3r/Slic3r-master/xs/xsp/typemap.xspt"  "C:/Users/bwbeall/Downloads/Downloads/slic3r/Slic3r-master/xs/xsp/PolylineCollection.xsp"(56) : warning C4267: '=' : conversion from 'size_t' to 'int', possible loss of data
c:\\wperl64r\\bin\\perl.exe -MExtUtils::XSpp::Cmd -e xspp -- -t "C:/Users/bwbeall/Downloads/Downloads/slic3r/Slic3r-master/xs/xsp/typemap.xspt"  "C:/Users/bwbeall/Downloads/Downloads/slic3r/Slic3r-master/xs/xsp/PolylineCollection.xsp"(81) : warning C4018: '<' : signed/unsigned mismatch
c:\\wperl64r\\bin\\perl.exe -MExtUtils::XSpp::Cmd -e xspp -- -t "C:/Users/bwbeall/Downloads/Downloads/slic3r/Slic3r-master/xs/xsp/typemap.xspt"  "C:/Users/bwbeall/Downloads/Downloads/slic3r/Slic3r-master/xs/xsp/PolylineCollection.xsp"(117) : warning C4018: '<' : signed/unsigned mismatch
buildtmp\XS.c(42820) : warning C4244: '=' : conversion from 'double' to 'I32', possible loss of data
error building dll file from 'buildtmp\XS.c' at c:/wperl64r/lib/ExtUtils/CBuilder/Platform/Windows.pm line 129.
FAIL
! Installing ./xs failed. See C:\wperl64r\cpanm\work\1479823327.5884\build.log for details. Retry with --force to force install it.
The XS/C++ code failed to compile, aborting

So, I think for my kludge workaround, I'll replace the CONFESS macro with something like the second line 
confess_at("actual filename", __LINE__, "actual function", "actual message");

Suboptimal, but better than commenting out the whole line.