一个奇葩的bug，关于Backend Internal error: Exception during IR lowering

// viewmodel中定义两个数据
class LoginViewModel @Inject constructor() : BaseViewModel<LoginIntent>() {
    val height = MutableStateFlow(-1f)
    val weight = MutableStateFlow(-1f)
}

// UI中使用该数据做判定：
BaseLoginScreen(
	canNextClick = vm.weight.collectAsState().value!=-1f && vm.weight.collectAsState().value!=-1f,
) { 。。。 }
// 此时会报错，提示Backend Internal error: Exception during IR lowering，还有Runtime JAR files in the classpath should have the same version.

// 然而改成下面这种形式就对了：
val height = vm.weight.collectAsState().value
val weight = vm.weight.collectAsState().value
BaseLoginScreen(
	canNextClick = height!=-1f && weight!=-1f,
) { 。。。 }

标签：lowering,Exception,val,weight,IR,vm,value,collectAsState,1f
来源： https://www.cnblogs.com/lizhenxin/p/15926138.html