Compiler Optimization & Increments

Question

Does compiler optimization cause a problem with code like this? Specifically, can the auto-increments be replied upon to evaulate in the correct order?

uint result = (array[i++] << 16) | (array[i++] << 8) | array[i++];

Answer 1

Yes; this is specified.

The spec says:

Operands in an expression are evaluated from left to right. For example, in F(i) + G(i++) * H(i), method F is called using the old value of i, then method G is called with the old value of i, and, finally, method H is called with the new value of i. This is separate from and unrelated to operator precedence.