ios - 分析器警告 : assigned value is garbage or undefined

Question

我有一个即将完成的应用程序，在运行分析时出现以下错误:

Assigned value is garbage or undefined

错误发生在这行代码:

float flowSourceValue = flowSource[count];

当运行调试器时，代码会进入这个 for 循环并且 floatSourceValue 会被赋值。

if(gaugeReportsCFS){
    count = 0;
    gaugeCount = [flowKeys count];
    float tally = 0.0;
    float flowSource[gaugeCount];
    for (NSString *key in flowKeys){
        float flowSourceValue = flowSource[count]; //assigned value is garbage or undefined
        if(flowSourceValue < 1){
            gaugeReportsCFS = NO;
            gaugeReportsFeet = YES;
        } else {
            if(!isnan(flowSource[count])){
                flowSource[count] = [[rvrGauge.gaugeFlowList objectForKey:key] integerValue];
                tally += flowSource[count];
            }
        }
        count++;
    }
}

我收到此警告的原因可能是什么？谢谢!

Answer 1

本地数组

 float flowSource[gaugeCount];

未初始化，因此可能包含“垃圾”。访问它是未定义的行为。