Bug 44727

Bug: 44727

Impact:

Product:

GemStone/S 64 Bit

Versions:

3.2.2, 3.2.1, 3.2

Platform:

Fixed In:

3.2.3

Sessions may encounter unexpected errors in Unicode comparison mode

In Unicode comparison mode, comparison methods are installed into each session using transient method dictionaries. These were subject to in-memory GC. If this occurred, the legacy comparison code was used, with unexpected results.

Workaround

The following method fixes the problem:

classmethod: Unicode16
_useUnicodeComparePrimitives: aBoolean

 "enter protected mode"
| prot prev |
prot := System _protectedMode .
[ prev := self _lookupsUsingUnicodeCompares .
  prev == aBoolean ifFalse:[ | list tmd classes |
    list := self _unicodeCompareMapping .
    (classes := Array new) _setNoStubbing.
    1 to: list size by: 2 do:[:j | | aClass |
      aClass := list at: j .
      tmd := aBoolean ifTrue:[ self _unicodeCompareTmdForClass: aClass
                                  selectors: (list at: j + 1) ]
                     ifFalse:[ nil ] .
      aClass transientMethodDictForEnv: 0 put: tmd .
      classes add: aClass .
    ].
    SessionTemps current at: #UnicodeCompare_classes put: classes ."keep classes in memory"
    self _clearLookupCaches: 0 .
  ].
  self _cacheUsingUnicodeCompares .
] ensure:[
  prot _leaveProtectedMode
].
^ prev
%