匿名:错误:类型‘({cc1obj})’没有已知的大小，Xcode

Question

哈?

谷歌没有返回任何关于这个错误的信息...我所要做的就是在iphone的flipside应用中添加一个电影播放器控制器。

cc1obj: error: type '({anonymous})' does not have a known size
{standard input}:228:non-relocatable subtraction expression, "L_OBJC_SELECTOR_REFERENCES_9" minus "L00000000004$pb"
{standard input}:228:symbol: "L_OBJC_SELECTOR_REFERENCES_9" can't be undefined in a subtraction expression
{standard input}:218:non-relocatable subtraction expression, "L_OBJC_SELECTOR_REFERENCES_8" minus "L00000000004$pb"
{standard input}:218:symbol: "L_OBJC_SELECTOR_REFERENCES_8" can't be undefined in a subtraction expression
{standard input}:215:non-relocatable subtraction expression, "L_OBJC_CLASS_REFERENCES_2" minus "L00000000004$pb"
{standard input}:215:symbol: "L_OBJC_CLASS_REFERENCES_2" can't be undefined in a subtraction expression
{standard input}:207:non-relocatable subtraction expression, "L_OBJC_SELECTOR_REFERENCES_7" minus "L00000000004$pb"
{standard input}:207:symbol: "L_OBJC_SELECTOR_REFERENCES_7" can't be undefined in a subtraction expression
{standard input}:203:non-relocatable subtraction expression, "L_OBJC_CLASS_REFERENCES_1" minus "L00000000004$pb"
{standard input}:203:symbol: "L_OBJC_CLASS_REFERENCES_1" can't be undefined in a subtraction expression
{standard input}:151:non-relocatable subtraction expression, "L_OBJC_SELECTOR_REFERENCES_6" minus "L00000000003$pb"
{standard input}:151:symbol: "L_OBJC_SELECTOR_REFERENCES_6" can't be undefined in a subtraction expression
{standard input}:147:non-relocatable subtraction expression, "L_OBJC_CLASS_FlipsideViewController" minus "L00000000003$pb"
{standard input}:147:symbol: "L_OBJC_CLASS_FlipsideViewController" can't be undefined in a subtraction expression
{standard input}:116:non-relocatable subtraction expression, "L_OBJC_SELECTOR_REFERENCES_4" minus "L00000000002$pb"
{standard input}:116:symbol: "L_OBJC_SELECTOR_REFERENCES_4" can't be undefined in a subtraction expression
{standard input}:110:non-relocatable subtraction expression, "L_OBJC_SELECTOR_REFERENCES_5" minus "L00000000002$pb"
{standard input}:110:symbol: "L_OBJC_SELECTOR_REFERENCES_5" can't be undefined in a subtraction expression
{standard input}:80:non-relocatable subtraction expression, "L_OBJC_SELECTOR_REFERENCES_2" minus "L00000000001$pb"
{standard input}:80:symbol: "L_OBJC_SELECTOR_REFERENCES_2" can't be undefined in a subtraction expression
{standard input}:74:non-relocatable subtraction expression, "L_OBJC_SELECTOR_REFERENCES_3" minus "L00000000001$pb"
{standard input}:74:symbol: "L_OBJC_SELECTOR_REFERENCES_3" can't be undefined in a subtraction expression
{standard input}:67:non-relocatable subtraction expression, "L_OBJC_SELECTOR_REFERENCES_1" minus "L00000000001$pb"
{standard input}:67:symbol: "L_OBJC_SELECTOR_REFERENCES_1" can't be undefined in a subtraction expression
{standard input}:64:non-relocatable subtraction expression, "L_OBJC_CLASS_REFERENCES_0" minus "L00000000001$pb"
{standard input}:64:symbol: "L_OBJC_CLASS_REFERENCES_0" can't be undefined in a subtraction expression
{standard input}:58:non-relocatable subtraction expression, "L_OBJC_SELECTOR_REFERENCES_0" minus "L00000000001$pb"
{standard input}:58:symbol: "L_OBJC_SELECTOR_REFERENCES_0" can't be undefined in a subtraction expression
{standard input}:54:non-relocatable subtraction expression, "L_OBJC_CLASS_FlipsideViewController" minus "L00000000001$pb"
{standard input}:54:symbol: "L_OBJC_CLASS_FlipsideViewController" can't be undefined in a subtraction expression
{standard input}:unknown:Undefined local symbol L_OBJC_CLASS_FlipsideViewController
{standard input}:unknown:Undefined local symbol L_OBJC_SELECTOR_REFERENCES_0
{standard input}:unknown:Undefined local symbol L_OBJC_CLASS_REFERENCES_0
{standard input}:unknown:Undefined local symbol L_OBJC_SELECTOR_REFERENCES_1
{standard input}:unknown:Undefined local symbol L_OBJC_SELECTOR_REFERENCES_3
{standard input}:unknown:Undefined local symbol L_OBJC_SELECTOR_REFERENCES_2
{standard input}:unknown:Undefined local symbol L_OBJC_SELECTOR_REFERENCES_5
{standard input}:unknown:Undefined local symbol L_OBJC_SELECTOR_REFERENCES_4
{standard input}:unknown:Undefined local symbol L_OBJC_SELECTOR_REFERENCES_6
{standard input}:unknown:Undefined local symbol L_OBJC_CLASS_REFERENCES_1
{standard input}:unknown:Undefined local symbol L_OBJC_SELECTOR_REFERENCES_7
{standard input}:unknown:Undefined local symbol L_OBJC_CLASS_REFERENCES_2
{standard input}:unknown:Undefined local symbol L_OBJC_SELECTOR_REFERENCES_8
{standard input}:unknown:Undefined local symbol L_OBJC_SELECTOR_REFERENCES_9

在将编译器转到clang(llvc)之后

我得到了这个内部编译器错误:分段错误

-(IBAction)clickedOpenMovie:(void)sender
{
    NSString *myString = [NSString stringWithFormat:@"http://localhost:1935/mystream/mystream.sdp"];

    NSURL *myURL = [NSURL URLWithString:myString];

   [self playMovieAtURL:myURL];

}

Answer 1

-(IBAction)clickedOpenMovie：(无效)发送者

这是错误的。void表示无类型，并且不能将无类型的参数传递给函数。这可能就是导致您从cc1obj中得到错误的原因。

操作方法的正确签名是：

-(IBAction)clickedOpenMovie:(id)sender

id是任何Objective-C对象的类型。

myString stringWithFormat:@"http://localhost:1935/mystream/mystream.sdp"；=

NSString * NSString myString

这既是错误的，因为这不是格式化字符串，也是没有意义的，因为您已经有了完成的字符串。剪切消息，只需将字符串直接赋值给变量：

NSString *myString = @"http://localhost:1935/mystream/mystream.sdp";

只有当您有一个格式字符串和一些要拼接到其中的值时，才应该使用stringWithFormat:。

Answer 2

对于其他任何人来说，如果你得到了一个完全没有帮助的错误信息："type‘({匿名})’没有一个已知的大小“，那是因为你搞砸了你的一个方法原型。因此，在上面的例子中，错误是由无意义(void)参数引起的。所有其他错误都是链接错误，与第一个错误无关。所以，检查一下你还没有把一个(id)类型输入到其他东西中。

Answer 3

因此，问题是我没有将框架添加到我的xcode项目中，因此链接库也不在那里。