Question

如何显示lldb中每一步的所有帧变量？

例如，我在C

中有一个例程

int
print_all_variables(int a, int b)
{
    int x = 10, i;
    for (i = 0; i < 10; i++) {
        x = a + b + x;
        b++;
        x++;
    }
    return x;
}

我想在使用lldb进行调试时，在每个步骤中显示上面print_all_variables（）例程中所有变量的值

Answer 1

这个lldb命令可以解决这个问题：

target stop-hook add --one-liner "frame variable"

示例：

(lldb) b print_all_variables
Breakpoint 2: where = stophook`print_all_variables + 10 at main.c:14, address = 0x0000000100000eca
(lldb) target stop-hook add --one-liner "frame variable"
Stop hook #1 added.
(lldb) c
Process 4838 resuming
(int) a = 10
(int) b = 20
(int) x = 32767
(int) i = 1606416664
(lldb) n
(int) a = 10
(int) b = 20
(int) x = 10
(int) i = 1606416664
(lldb) n
(int) a = 10
(int) b = 20
(int) x = 10
(int) i = 0
(lldb)

Answer 2

这可以方便地在一个命令中执行所有操作：

make && chmod 755 your_program && lldb -s <(echo 'target stop-hook add --one-liner "frame variable"') your_program your_program_s_arguments

显示lldb中每个步骤的所有帧变量

2 个答案: