undo after "destroy group" does not recover the group name; ARB crashes after a subsequent try to rename the group

[meierh]

When I destroy a group (group—>right click on inner node; destroy), and perform an "undo" errors occurs:

case1: I destroyed group "Bacteria":

• strange group name (#IGROUP Mrö31) +
• ARB-Message: ARB is most likely unstable now (due to this error). If you've made changes to the database, consider to save it using a different name. Try to fix the cause of the error and restart ARB. 16:39.28 Internal ARB Error: ARB ERROR: Internal Error: Cannot uncompress data of field

'group_name'

• Rename Group works

case 2: I destroyed the group Firmicutes

• ARB-Message: 16:50.19 ARB ERROR: in 'taxonomy(1)': while applying 'taxonomy(1)' to : Group without 'group_name' entry

• Error Message occurs as group name in the : "<error: ARB ERROR: in 'taxonomy(1)': while applying…."

• ARB crashes with SegFault?, when I try to rename the group

[meierh]

Test-Database: SSURef_92_SILVA_26_09_07_opt.arb

[westram]

• similar effect, when group info is moved to a different node and then applying undo:
  • group name disappears
  • saving results in unloadable (GB_STRING_SHRT-; "Unknown -type 0"; this is already fixed in CVS!)

[meierh]

This effect is not database specific. Occurs too with "SSURef_96_SILVA_04_10_08_opt.arb" and "SSURef_98_SILVA_20_03_09_opt.arb". It occurs just for some groups been destroyed and tried to become restored by pressing the "undo"-button (e.g. for Bacteria, but not for Archaea). 'Group-size-dependant?

[westram]

might get fixed by #496

[westram]

to reproduce this with demo.arb follow these instructions