我想問一問，為什么結構體a的指針變量的地址不能被GDB打印出來？？
(gdb) p &next
Can't take address of "next" which isn't an lvalue.
(gdb) p *next
value has been optimized out
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(gdb) p &next
Can't take address of "next" which isn't an lvalue.
(gdb) p *next
value has been optimized out
2016-10-04
舉報
2016-10-06
你是直接打印的next的地址啊，計算機怎么知道你要打印哪個結構體的next？修改為p &a.next