I had found that Lazarus can't debug dll with some exe in a dir have Chinese lazarus / 12-Debugger ---------------------------------------------------------------------- sainimu78 · 2015-08-23 16:10 A dir like this: Run->Run parameters->Host application = E:\Fts\Proj\Test\工在地人\bin\main.exe It can't stop at any breakpoint while running. I had really hard trying to handle this, but I failed. Eventually, I guess it is the bug of GDB.exe. Does GDB support host application in a dir of not all English chars?