我有以下代码段
Class Filters { vector<int> numbers; }
Filters f1;
我需要调试f1.numbers
中的内容Windbg>
??f1.numbers
class std::vector<bool,std::allocator<bool> >
+0x000 _Myvec : std::vector<unsigned int,std::allocator<unsigned int> >
+0x018 _Mysize : 7
Windbg>
??f1.numbers._Myvec._Mypair._Myval2
class std::_Vector_val<std::_Simple_types<unsigned int> >
+0x000 _Myfirst : 0x00000089`006cf220 -> 0x7e
+0x008 _Mylast : 0x00000089`006cf224 -> 0x5c
+0x010 _Myend : 0x00000089`006cf224 -> 0x5c
Windbg>
!stl f1.numbers
<NULL>
如何在里面打印7个元素？
答案 0 :(得分：3)
0:000> lsa .
1: #include <iostream>
2: #include <vector>
3: using namespace std;
4: int main() {
5: vector<int> v = {7, 5, 16, 8};
> 6: v.push_back(25);
7: v.push_back(13);
8: for(int n : v) { std::cout << n << '\n'; }
9: }
在windbg中
0:000> ?? v._Mypair._Myval2._Myfirst
int * 0x0044abd8
0:000> ?? v._Mypair._Myval2._Myfirst[0]
int 0n7
0:000> ?? v._Mypair._Myval2._Myfirst[1]
int 0n5
0:000> ?? v._Mypair._Myval2._Myfirst[2]
int 0n16
0:000> ?? v._Mypair._Myval2._Myfirst[3]
int 0n8
0:000> ?? v._Mypair._Myval2._Myfirst[4]
int 0n-1414812757
第2步行执行两次回退以查看其余的
0:000> p
0:000> p
0:000> ?? v._Mypair._Myval2._Myfirst[4]
int 0n25
0:000> ?? v._Mypair._Myval2._Myfirst[5]
int 0n13
0:000> ?? v._Mypair._Myval2._Myfirst[6]
int 0n-1414812757
或使用此表达式
0:000> dd /c 1 @@c++(*(int *)&(v._Mypair._Myval2._Myfirst)) L? ((@@c++(*(int *)&(v._Mypair._Myval2._Mylast))) - (@@c++(*(int *)&(v._Mypair._Myval2._Myfirst))))/@@(sizeof(int)))
0044ac00 00000007
0044ac04 00000005
0044ac08 00000010
0044ac0c 00000008
0044ac10 00000019
0044ac14 0000000d
或者如果您有更高版本的windbg，其中natvis javascript等可用，您只需使用dx命令
0:000> dx v
v : { size=6 } [Type: std::vector<int,std::allocator<int> >]
[<Raw View>] [Type: std::vector<int,std::allocator<int> >]
[capacity] : 6
[allocator] : allocator [Type: std::_Compressed_pair<std::allocator<int>,std::_Vector_val<std::_Simple_types<int> >,1>]
[0] : 7 [Type: int]
[1] : 5 [Type: int]
[2] : 16 [Type: int]
[3] : 8 [Type: int]
[4] : 25 [Type: int]
[5] : 13 [Type: int]
表达式似乎会失败，或者您可能需要大幅修改表达式以打印字符串向量或双向量
dx可以很好地扩展到所有场景
修改后的src和输出以及来自windbg的输出dx
:\>vectie.exe
7
5
16
8
25
13
seven
在windbg中
0:000> lsa .
1: #include <iostream>
2: #include <vector>
3: using namespace std;
4: int main() {
5: vector<int> v = {7, 5, 16, 8};
6: v.push_back(25); 7: v.push_back(13);
8: for(int n : v) { std::cout << n << '\n'; }
10: vector<string> w = {"seven", "five", "sixteen", "eight"};
11: w.push_back("twenty five");
12: w.push_back("thirteen");
> 13: cout << w[0].c_str() << '\n';
15: }
0:000> dx v ; dx w
v : { size=6 } [Type: std::vector<int,std::allocator<int> >]
[<Raw View>] [Type: std::vector<int,std::allocator<int> >]
[capacity] : 6
[allocator] : allocator [Type: std::_Compressed_pair<std::allocator<int>,std::_Vector_val<std::_Simple_types<int> >,1>]
[0] : 7 [Type: int]
[1] : 5 [Type: int]
[2] : 16 [Type: int]
[3] : 8 [Type: int]
[4] : 25 [Type: int]
[5] : 13 [Type: int]
w : { size=6 } [Type: std::vector<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >]
[<Raw View>] [Type: std::vector<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >]
[capacity] : 6
[allocator] : allocator [Type: std::_Compressed_pair<std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >,std::_Vector_val<std::_Simple_types<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >,1>]
[0] : "seven" [Type: std::basic_string<char,std::char_traits<char>,std::allocator<char> >]
[1] : "five" [Type: std::basic_string<char,std::char_traits<char>,std::allocator<char> >]
[2] : "sixteen" [Type: std::basic_string<char,std::char_traits<char>,std::allocator<char> >]
[3] : "eight" [Type: std::basic_string<char,std::char_traits<char>,std::allocator<char> >]
[4] : "twenty five" [Type: std::basic_string<char,std::char_traits<char>,std::allocator<char> >]
[5] : "thirteen" [Type: std::basic_string<char,std::char_traits<char>,std::allocator<char> >]
假设你有一个声明的结构向量
typedef struct _MYSTRUCT {
int intie;
string stringie;
double doblee;
}Mystruct,*PMystruct;
xxxxxx
vector<Mystruct> y = {{1,"one",1.0}, {5,"five",5.0}, {16,"sixteen",16.0}};
y.push_back({25,"twenty five",25.0});
for(int i = 0 ; i < 3; i++){
cout << "{ " << y[i].intie <<" "<<y[i].stringie.c_str() << " "<< y[i].doblee <<" } \n";
}
dx将整齐地向下钻取到向量
中每个结构的最后一个成员0:000> lsp -a 4 ; lsa .
WARNING: Source line display is disabled
At the prompt, display 2 source lines before and 2 after
For lsa commands, display 2 source lines before
For ls and lsa commands, display 4 source lines
28:
29: vector<Mystruct> y = {{1,"one",1.0}, {5,"five",5.0}, {16,"sixteen",16.0}};
> 30: y.push_back({25,"twenty five",25.0});
31: for(int i = 0 ; i < 3; i++){
0:000> dx -r4 y
y : { size=4 } [Type: std::vector<_MYSTRUCT,std::allocator<_MYSTRUCT> >]
[<Raw View>] [Type: std::vector<_MYSTRUCT,std::allocator<_MYSTRUCT> >]
[capacity] : 4
[allocator] : allocator [Type: std::_Compressed_pair<std::allocator<_MYSTRUCT>,std::_Vector_val<std::_Simple_types<_MYSTRUCT> >,1>]
[<Raw View>] [Type: std::_Compressed_pair<std::allocator<_MYSTRUCT>,std::_Vector_val<std::_Simple_types<_MYSTRUCT> >,1>]
[0] [Type: _MYSTRUCT]
[+0x000] intie : 1 [Type: int]
[+0x004] stringie : "one" [Type: std::basic_string<char,std::char_traits<char>,std::allocator<char> >]
[<Raw View>] [Type: std::basic_string<char,std::char_traits<char>,std::allocator<char> >]
[size] : 0x3 [Type: unsigned int]
[capacity] : 0xf [Type: unsigned int]
[allocator] : allocator [Type: std::_Compressed_pair<std::allocator<char>,std::_String_val<std::_Simple_types<char> >,1>]
[<Raw View>] [Type: std::_Compressed_pair<std::allocator<char>,std::_String_val<std::_Simple_types<char> >,1>]
[0] : 111 'o' [Type: char]
[1] : 110 'n' [Type: char]
[2] : 101 'e' [Type: char]
[+0x020] doblee : 1.000000 [Type: double]
[1] [Type: _MYSTRUCT]
[+0x000] intie : 5 [Type: int]
[+0x004] stringie : "five" [Type: std::basic_string<char,std::char_traits<char>,std::allocator<char> >]
[<Raw View>] [Type: std::basic_string<char,std::char_traits<char>,std::allocator<char> >]
[size] : 0x4 [Type: unsigned int]
[capacity] : 0xf [Type: unsigned int]
[allocator] : allocator [Type: std::_Compressed_pair<std::allocator<char>,std::_String_val<std::_Simple_types<char> >,1>]
[<Raw View>] [Type: std::_Compressed_pair<std::allocator<char>,std::_String_val<std::_Simple_types<char> >,1>]
[0] : 102 'f' [Type: char]
[1] : 105 'i' [Type: char]
[2] : 118 'v' [Type: char]
[3] : 101 'e' [Type: char]
[+0x020] doblee : 5.000000 [Type: double]
[2] [Type: _MYSTRUCT]
[+0x000] intie : 16 [Type: int]
[+0x004] stringie : "sixteen" [Type: std::basic_string<char,std::char_traits<char>,std::allocator<char> >]
[<Raw View>] [Type: std::basic_string<char,std::char_traits<char>,std::allocator<char> >]
[size] : 0x7 [Type: unsigned int]
[capacity] : 0xf [Type: unsigned int]
[allocator] : allocator [Type: std::_Compressed_pair<std::allocator<char>,std::_String_val<std::_Simple_types<char> >,1>]
[<Raw View>] [Type: std::_Compressed_pair<std::allocator<char>,std::_String_val<std::_Simple_types<char> >,1>]
[0] : 115 's' [Type: char]
[1] : 105 'i' [Type: char]
[2] : 120 'x' [Type: char]
[3] : 116 't' [Type: char]
[4] : 101 'e' [Type: char]
[5] : 101 'e' [Type: char]
[6] : 110 'n' [Type: char]
[+0x020] doblee : 16.000000 [Type: double]
[3] [Type: _MYSTRUCT]
[+0x000] intie : 25 [Type: int]
[+0x004] stringie : "twenty five" [Type: std::basic_string<char,std::char_traits<char>,std::allocator<char> >]
[<Raw View>] [Type: std::basic_string<char,std::char_traits<char>,std::allocator<char> >]
[size] : 0xb [Type: unsigned int]
[capacity] : 0xf [Type: unsigned int]
[allocator] : allocator [Type: std::_Compressed_pair<std::allocator<char>,std::_String_val<std::_Simple_types<char> >,1>]
[<Raw View>] [Type: std::_Compressed_pair<std::allocator<char>,std::_String_val<std::_Simple_types<char> >,1>]
[0] : 116 't' [Type: char]
[1] : 119 'w' [Type: char]
[2] : 101 'e' [Type: char]
[3] : 110 'n' [Type: char]
[4] : 116 't' [Type: char]
[5] : 121 'y' [Type: char]
[6] : 32 ' ' [Type: char]
[7] : 102 'f' [Type: char]
[8] : 105 'i' [Type: char]
[9] : 118 'v' [Type: char]
[10] : 101 'e' [Type: char]
[+0x020] doblee : 25.000000 [Type: double]