[Mesa3d-dev] SET_IMMEDIATE macro in tnl/t_context.h

[Li M. <mi...@mp...>]

Hi,

Another compilation problem on Irix platform
----------symptom----------------
cc-1133 cc: ERROR File = tnl/t_dlist.c, Line = 97
  Expression must be a modifiable lvalue.

        SET_IMMEDIATE( ctx, new_im );
        ^

cc-1133 cc: ERROR File = tnl/t_dlist.c, Line = 193
  Expression must be a modifiable lvalue.

     SET_IMMEDIATE( ctx, TNL_VB(ctx)->IM );
     ^

cc-1133 cc: ERROR File = tnl/t_dlist.c, Line = 204
  Expression must be a modifiable lvalue.

     SET_IMMEDIATE( ctx, IM );

-----------cause-----------------
This is because in tnl/t_context.h
 do {                                            \
     TNL_CURRENT_IM(ctx) = im;                    \
     _mesa_CurrentInput = im;                     \
 } while (0)

TNL_CURRENT_IM(ctx)  will produce a value not suitable put in the left
side.

-----------solution----------------
So maybe this line should be modified to
ctx->swtnl_im = (void *)im



---------
Li Ming