I'm using CB for first time, I use Visual Studio series for a long time.
What I confused is the hint message followed:
*** WARNING: Unable to verify checksum for HelloWorld.exe
now I know what happened.
No breakpoint, no the warning message, but if breakpoint set, the warning message is shown.
This is not errno, but is confusing.
cdb is a executable file in windbg package, CB call it silently.
As a newbie, I didn't know cdb and windbg, just download windbg package follow some guide by google.
Thanks for the reply.