| ### Compilation failed: | |
| error: 7: cannot assign to this expression | |
| error: 8: cannot modify immutable variable 'u' | |
| error: 9: cannot modify immutable variable 'x' | |
| error: 11: cannot assign to this expression | |
| error: 12: cannot write to the same swizzle field more than once | |
| error: 14: cannot modify immutable variable 'l' | |
| error: 15: cannot modify immutable variable 'r' | |
| error: 16: cannot modify immutable variable 'l' | |
| error: 17: cannot assign to this expression | |
| error: 18: cannot assign to this expression | |
| error: 21: cannot modify immutable variable 'x' | |
| error: 22: cannot modify immutable variable 'x' | |
| error: 23: cannot modify immutable variable 's' | |
| 13 errors |