The fact that the following shader compiles without errors is probably a bug:
color f = 1;
float f = 1;
Ci = 0;
The resulting VM code seems to be consistent however, and unlikely to cause a crash.
Logged In: YES
After looking about a bit, it seems that a good place to start fixing this one is at parser.yy:767.
The TODO on that line even mentions the problem.
Also, bug 1848873 may be closely related; see
You seem to have CSS turned off.
Please don't fill out this field.