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am 787fd368: Merge "Stopgap solution for a crash." 

* commit '787fd368c4069198111c20cdab2fe3367250c441':
  Stopgap solution for a crash.
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Jean Chalard 2013-10-22 04:06:39 -07:00 committed by Android Git Automerger
parent ed8c086dae 787fd368c4
commit dbd87dc2f8
1 changed files with 8 additions and 1 deletions
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9
java/src/com/android/inputmethod/latin/RichInputConnection.java
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@ -294,7 +294,14 @@ public final class RichInputConnection {
// the text field, then we can return the cached version right away.
if (cachedLength >= n || cachedLength >= mExpectedCursorPosition) {
final StringBuilder s = new StringBuilder(mCommittedTextBeforeComposingText);
s.append(mComposingText);
// We call #toString() here to create a temporary object.
// In some situations, this method is called on a worker thread, and it's possible
// the main thread touches the contents of mComposingText while this worker thread
// is suspended, because mComposingText is a StringBuilder. This may lead to crashes,
// so we call #toString() on it. That will result in the return value being strictly
// speaking wrong, but since this is used for basing bigram probability off, and
// it's only going to matter for one getSuggestions call, it's fine in the practice.
s.append(mComposingText.toString());
if (s.length() > n) {
s.delete(0, s.length() - n);
}