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GDB调试器中变量名冲突
原标题:Variable name conflict with GDB debugger

我正在Linux上使用GDB调试一个C++程序,我需要在程序运行时查看一个成员变量的值。不幸的是,这个成员变量的名称是list,这恰好是一个GDB关键字。所以当我尝试:

打印m_operations.m_data[10].m_data.list

我得到...

代码中表达式语法错误,附近为列表。

我尝试了各种方法来指示GDB我正在输入一个文字表达式,比如在变量名周围加上双引号或单引号,但结果只是更多的语法错误。我查看了GDB手册,但没有找到任何解决方法。我不能重命名成员变量,因为我没有权限修改那个类。此外,list是一个C++对象,不是常规整数或POD,所以我不能简单地使用x关键字来检查那里的内存......至少不需要花费一些严肃的时间来解密原始二进制表示。

那么,有任何建议来解决这个问题吗?

问题回答

问题不是你所想的那样-如果我调试以下代码:

int main() {
    int list = 666;
    while( list ) {
        list--;
    }
}

我可以在第三行中断并说:

(gdb) print list

这给了我:

$1 = 666

你正在尝试打印的表达式肯定还有其他问题。你尝试使用GUI调试器,比如DDD,通过鼠标点击选择你想要打印的内容了吗?

这很可能是<条码>中的缩略语。 GDB (或可能列入<代码>GCC)。

首先尝试最新的GDB(7.0.1)。

如果失败了,请尝试创建一个简单的独立测试用例,并在GDB bugzilla 中报告错误。如果您这样做,请务必说明编译测试时使用的GCC版本。





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