Question

我正在使用 Qt Creator 调试器，但是当我想通过从本地和表达式视图展开来检查当前this变量时，需要在回馈控制权之前相当长（约30秒）。

我在调试器日志视图中注意到以下消息：

3518fetchVariables({"autoderef":1,"context":"","displaystringlimit":"100","dyntype":1,"expanded":["return","inspect","local.this","watch","local"],"fancy":1,"formats":{},"nativemixed":0,"partialvar":"local.this","passexceptions":0,"qobjectnames":1,"stringcutoff":"10000","token":3518,"typeformats":{},"watchers":[]})
(lldb) script theDumper.fetchVariables({"autoderef":1,"context":"","displaystringlimit":"100","dyntype":1,"expanded":["return","inspect","local.this","watch","local"],"fancy":1,"formats":{},"nativemixed":0,"partialvar":"local.this","passexceptions":0,"qobjectnames":1,"stringcutoff":"10000","token":3518,"typeformats":{},"watchers":[]})
bridgemessage={msg="Searching for type QObjectPrivate across all target modules, this could be very slow"},
eERROR: Lldb stderr: error: PlaybackDevice.o DWARF DW_TAG_array_type DIE at 0x0000db86 has a class/union/struct element type DIE 0x0000db92 that is a forward declaration, not a complete definition.
Try compiling the source file with -fno-limit-debug-info or disable -gmodule

我正在使用：

Qt 5.9.2
Qt Creator 4.5.0
OSX 10.12.6 。

修改

正如Kuba Ober建议我使用Qt（5.10.0）的调试版本，感谢此链接：Qt Creator debugger very slow

不幸的是，邮件已更改为：

eERROR: Lldb stderr: error: PlayBackDevice.o DWARF DW_TAG_array_type DIE at 0x0000f43e has a class/union/struct element type DIE 0x0000f44a that is a forward declaration, not a complete definition.
Try compiling the source file with -fno-limit-debug-info or disable -gmodule

Answer 1

我猜你没有使用Qt的调试版本。虽然这个“bug”很烦人，但实际上它会强制您使用Qt的调试版本来调试项目。它应该会提高你的工作效率 - 当你有意义地进入Qt代码时，很容易解决许多问题。

Answer 2

我遇到了同样的问题。解决这个问题的方法是解开＆＃34;显示QObject名称（如果可用）＆＃34;在QtCreator首选项中 - ＆gt;调试器 - ＆gt;当地人和表达式。

Answer 3

我有类似的问题，他们大多是通过将我的编译器更改为与我正在使用的lldb相同的目录中的Clang来解决的。（顺便说一下，Clang的文件名是gcc。）

Qt Creator调试器非常慢

3 个答案: