--- maxreason <[EMAIL PROTECTED]> wrote:
>
> 2: From a linux C header file that I created a few years
> ago --- that I am fairly sure used to compile properly --- the
> following generate warnings and errors:
>
> typedef union vec004_64 {
> f64 af64[4];
> struct {
> f64 x, y, z, w;
> };
> struct {
> f64 m00, m01;
> f64 m10, m11;
> };
> } __attribute__ ((aligned(16))); // warning displayed here
> //
> // warning: "useless storage class specifier in empty declaration".
> // The above happens on every similar declaration in the file.
> //
> // Then, down further, i get ***errors*** on every line like this:
> //
> typedef vec004_64 f64vec4; // error displayed on this line
> typedef vec004_64 f64mat2x2; // error displayed on this line
> //
> // "expected '=', ',', ';', 'asm' or '__attribute__' before f64vec4
> //
> I am confused. I remember not being familiar with the
> __attribute__ syntax when I found it years ago --- but
> at least it compiled and worked back then.
About typedef usage: The name of the new type must come after the old
type. So the right code is:
typedef union {
f64 af64[4];
struct {
f64 x, y, z, w;
};
struct {
f64 m00, m01;
f64 m10, m11;
};
} __attribute__ ((aligned(16))) vec004_64;
typedef vec004_64 f64vec4;
typedef vec004_64 f64mat2x2;
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