I was running ddd throughout a ssh-tunnel (ssh -X -C user@remotehost) on a remote machine (X server was running on my own machine) and I got this error:
X Error of failed request: BadWindow (invalid Window parameter)
Major opcode of failed request: 3 (X_GetWindowAttributes) Resource id in failed request: 0x1205d7a Serial number of failed request: 61607 Current serial number in output stream: 61608 Widget hierarchy of resource: unknown
Xlib: unexpected async reply (sequence 0xf4ce)! X Error of failed request: BadWindow (invalid Window parameter) Major opcode of failed request: 3 (X_GetWindowAttributes) Resource id in failed request: 0x1205d7a
Serial number of failed request: 62669 Current serial number in output stream: 62804 Widget hierarchy of resource: unknown
X error (invalid Window parameter).
Moreover the .ddd/log file reported these lines:
Xlib: extension "GLX" missing on display "localhost:11.0". X Error: BadAtom (invalid Atom parameter) 5 Major opcode: 20 Resource id: 0xff Segmentation fault
Best regards, Fabio
-- "Considerate la vostra semenza: fatti non foste a viver come bruti, ma per seguir virtute e canoscenza" (Dante: Inferno XXVI, 118-120)