c# - 编译器优化和增量

Question

编译器优化会导致这样的代码出现问题吗？具体来说，是否可以回复自动增量以正确的顺序求值？

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

Answer 1

Yes; this is specified .

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.