Karl Schultz wrote:
> Am getting these warnings in the Windows build:
>
> 2>Compiling...
> 2>lex.yy.c
> 2>program_lexer.l(327) : warning C4244: '=' : conversion from 'double'
> to 'float', possible loss of data
> 2>program_lexer.l(331) : warning C4244: '=' : conversion from 'double'
> to 'float', possible loss of data
> 2>program_lexer.l(335) : warning C4244: '=' : conversion from 'double'
> to 'float', possible loss of data
> 2>program_lexer.l(339) : warning C4244: '=' : conversion from 'double'
> to 'float', possible loss of data
>
> The corresponding lines in program_lexer.l are:
>
> {num}?{frac}{exp}? {
> yylval->real = _mesa_strtod(yytext, NULL);
> return REAL;
> }
> {num}"."/[^.] {
> yylval->real = _mesa_strtod(yytext, NULL);
> return REAL;
> }
> {num}{exp} {
> yylval->real = _mesa_strtod(yytext, NULL);
> return REAL;
> }
> {num}"."{exp} {
> yylval->real = _mesa_strtod(yytext, NULL);
> return REAL;
> }
>
> I think that we need to add a cast to these four places, e.g.:
>
> yylval->real = (float) _mesa_strtod(yytext, NULL);
>
> Changing progam_lexer.l requires that lex.yy.c (and others) be
> regenerated with flex/bison and the generated files committed as well,
> right? Is there a git trigger that does this, which would be really
> cool? Or does someone need to run flex/bison manually and commit all
> the resulting files?
>
> If the latter, I don't know the exact process and I'd guess that someone
> routinely does this.
>
> If it is not a huge hassle, can someone add these casts to 7.8 and
> master? The warnings are no big deal, but the casts do have some value
> in documenting the implicit conversion.
I'll take care of it. It's up to the developer to regenerate the
files and commit them (to avoid everyone needing flex/bison).
-Brian
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