vscode c++ 编译生成后,调试时无法命中断点

 1 //test.cpp
 2 #include <stdio.h>
 3 int g_var = 0;
 4 void print_line(char *str)
 5 {
 6     if (str != NULL)
 7         printf("%s\r\n", str);
 8     else
 9         printf("null string\r\n");
10 }
11 int main (int argc, char **argv)
12 {
13     int l_var = 1;
14     print_line("hello world!");
15     printf("g_var = %d, l_var = %d.\r\n", g_var, l_var);
16     return 0;
17 }

 1 {
 2         "version": "0.2.0",
 3         "configurations": [
 4             {
 5                 "name": "(gdb) Launch",
 6                 "type": "cppdbg",
 7                 "request": "launch",
 8                 "program": "${workspaceRoot}/test.exe",
 9                 "args": [],
10                 "stopAtEntry": false,
11                 "cwd": "${workspaceRoot}",
12                 "environment": [],
13                 "externalConsole": true,
14                 "MIMode": "gdb",
15                 "miDebuggerPath": "C:\\MinGW\\bin\\gdb.exe",
16                 "setupCommands": [
17                     {
18                         "description": "Enable pretty-printing for gdb",
19                         "text": "-enable-pretty-printing",
20                         "ignoreFailures": true
21                     }
22                 ]
23             }
24         ]
25     }

 1 {
 2     // See https://go.microsoft.com/fwlink/?LinkId=733558
 3     // for the documentation about the tasks.json format
 4     "version": "2.0.0",
 5     "tasks": [
 6         {
 7             "taskName": "test",
 8             "type": "shell",
 9             "command": "g++",
10             "args": ["-g", "${file}", "-o", "${workspaceRoot}/test.exe"]
11         }
12     ]
13 }