在ObjectiveC中与标签上的gdb断开

can I have gdb break on the label "gdbStatement:" in this example Code:

我可以在此示例代码中的标签“gdbStatement：”上使用gdb break吗？

...

        op1 = op2 = op3 = op4 = nil;
        op1 = [ops firstObject];
        if(jj>1)op2 = [ops oai:1];
        if(jj>2)op3 = [ops oai:2];
        if(jj>3)op4 = [ops oai:3];

gdbStatement:
// Wertzuweisungen
        if([stmt isZuweisung]){
// ausser bei mutable Targets, die erweitert werden oder im Fehlerfall hier drin kein continue, weil am Ende s1 weiterverarbeitet wird;
            NSString *val1,*s1;
            double varVal=0;

...

I know how to break on line numbers and functions. But can't find how to break on labels.

我知道如何打破行号和功能。但是找不到如何打破标签。

1 个解决方案

#1

FSF or apple gdb? The below applies to FSF gdb.

FSF还是苹果gdb？以下适用于FSF gdb。

Assuming that the code is in a method, there appears to be no way to specify a breakpoint on a label in a method,

假设代码在方法中，似乎无法在方法中的标签上指定断点，

The syntax for specifying a breakpoint on a label is break function:label but the Objective-C linespec parser in FSF gdb does not parse this, so break -[aClass aMethod]:aLabel doesn't work

在标签上指定断点的语法是break函数：label但是FSF gdb中的Objective-C linespec解析器不会解析它，所以break - [aClass aMethod]：aLabel不起作用

One could reasonably assume that you could mangle the method specify a function breakpoint on the symbol name, like 'break _i_aClass__aMethod:label', but that doesn't currently work either for a reason I do not yet understand.

可以合理地假设你可以破坏方法在符号名称上指定一个函数断点，比如'break _i_aClass__aMethod：label'，但是由于我还不了解的原因，这当前不起作用。

tried with gdb 7.3 and 7.6.

尝试使用gdb 7.3和7.6。

#1