https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112447
--- Comment #15 from Vineet Gupta <vineetg at gcc dot gnu.org> --- (In reply to JuzheZhong from comment #14) > Let me give you some guide which helps you to dig into the problem. > > First, reduce the case as follows: Did your msg get truncated or pressed send too soon ? Because the reduced test you pasted is exactly what I uploaded to the bug and I can't reduce it any further.