Re: [ft-devel] Build freetype2 64bit in windows

[钱晓明]

freetype-2.4.9\src\bdf\bdflib.c(772): warning C4244: “function”: conversion from 'ptrdiff_t' to 'unsigned long', possible loss of data
error = (*cb)( buf + start, end - start, lineno,

               (void*)&cb, client_data );

 

 

freetype-2.4.9\src\base(39): warning C4306: “function”: conversion from ' int ' to ' FT_Pointer ' of greater size
FT_FACE_LOOKUP_SERVICE( face, service, WINFNT );
expand last line:
svc = FT_FACE( face )->internal->services. service_WINFNT;
if ( svc == FT_SERVICE_UNAVAILABLE ) // this line: FT_SERVICE_UNAVAILABLE is defined to ((FT_Pointer)-2)
    svc = NULL;
......

 

 

freetype-2.4.9\src\type1\t1load.c(618): warning C4244: “function”: conversion from 'FT_PtrDist' to 'FT_Long', possible loss of data

if ( FT_ALLOC( blend->axis_names[n], len + 1 ) )

 

 

freetype-2.4.9\src\truetype\ttgxvar.c(1257): warning C4306: “conversion”: conversion from ' int ' to ' FT_UShort * ' of greater size
else if ( localpoints == ALL_POINTS ) // ALL_POINTS is defined to (FT_UShort*)(-1)

I check the code, and think these warnings should not be big problems. They only disturb me when turn to x64 configuration.

在2012-04-12，"suzuki toshiya" <address@hidden> 写道： 
> -----原始邮件-----
> 发件人:"suzuki toshiya" <address@hidden> 
> 发送时间:2012年04月12日 星期四
> 收件人:"钱晓明" <address@hidden>
> 抄送:"freetype-devel" <address@hidden>
> 主题:Re: [ft-devel] Build freetype2 64bit in windows
>
> Hi,
>
> Thank you for reporting your issue, please let me ask some question.
>
> 钱晓明 wrote:
> > Hi, I am using solution file 'freetype.sln' in vc2010 directory to build freetype 2.4.9. I create new configuration for x64, and the build process has no error but with many warnings.
> > I see warings for these:
> > convert "ptrdiff_t" to "unsigned long"
>
> You mean that "ptrdiff_t" is unavailable (or incorrectly working) on Win64 so it should be replaced by "unsigned long"?
>
> > convert "int" to "FT_Pointer"
>
> It looks odd (from "int" to "FT_Pointer" ???) I guess you mean that "FT_Pointer" should be replaced by "int" ?
>
> > convert "FT_PtrDist" to "FT_Long"
>
> You mean that "FT_PtrDist" (it's alias of ptrdiff_t) is unavailable on Win64 so it should be replaced by "FT_Long"?
> In above, you proposed to replace ptrdiff_t by "unsigned long", so there is inconsistency. Which is right solution?
>
> > convert "int" to "FT_UShort*"
>
> It looks odd (from "int" to "FT_UShort*" pointer???) I guess you mean that "FT_UShort" should be replaced by "int" ?
> Again, there is a signedness inconsistency (signed int versus unsigned short).
>
> > How should I configure my 64bit project for vc2010 to avoid these? I think these pointer operations aren't correct.
> > 
> > Thanks.
> > 
> > 
> > 
> > ------------------------------------------------------------------------
> > 
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