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https://bugs.freedesktop.org/show_bug.cgi?id=8355
------- Additional Comments From [EMAIL PROTECTED] 2006-09-23 11:51 -------
(In reply to comment #3)
> (In reply to comment #2)
> > Not a bug.
> >
> > If you compile with warning flags (such as -Wall -Wmissing-prototypes -g
> > -ansi
> > -pedantic) you'll see a bunch of warnings such as:
> >
> > attribbug.c:136: warning: implicit declaration of function
> > `glVertexAttrib1dARB'
> > attribbug.c:141: warning: implicit declaration of function
> > `glVertexAttrib1fARB'
> >
> > To fix that, add #define GL_GLEXT_PROTOTYPES before you #include GL/gl.h
> >
> > Without prototypes, the compiler is passing an 8-byte double to
> > glVertexAttrib1fARB() which becomes an invalid value inside Mesa since it's
> > expecting a 4-byte float.
> >
> > When using C/C++ you should always use as many compiler warning options as
> possible.
> >
>
> Oh, I didn't realize that I'd forgotten -Wall. Thanks for pointing that out.
>
(In reply to comment #2)
> Not a bug.
>
> If you compile with warning flags (such as -Wall -Wmissing-prototypes -g -ansi
> -pedantic) you'll see a bunch of warnings such as:
>
> attribbug.c:136: warning: implicit declaration of function
> `glVertexAttrib1dARB'
> attribbug.c:141: warning: implicit declaration of function
> `glVertexAttrib1fARB'
>
> To fix that, add #define GL_GLEXT_PROTOTYPES before you #include GL/gl.h
>
> Without prototypes, the compiler is passing an 8-byte double to
> glVertexAttrib1fARB() which becomes an invalid value inside Mesa since it's
> expecting a 4-byte float.
>
> When using C/C++ you should always use as many compiler warning options as
possible.
>
I had seen those messages, where is a programmer supposed to find this out from
other than this bug?
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