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ICU-8175 Added note to clarify that j-1 is safe.

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X-SVN-Rev: 29546
This commit is contained in:
Mark Davis 2011-03-04 23:56:24 +00:00
parent 8f2a1ed97c
commit b55bbd25a9
1 changed files with 1 additions and 0 deletions
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icu4j/main/classes/core/src/com/ibm/icu/lang/CharSequences.java
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@ -275,6 +275,7 @@ public class CharSequences {
if (cp >= 0xDC00 && cp <= 0xDFFF && i != 0 ) { // hand-code for speed
char last = (char) result[j-1];
if (last >= 0xD800 && last <= 0xDBFF) {
// Note: j-1 is safe, because j can only be zero if i is zero. But i!=0 in this block.
result[j-1] = Character.toCodePoint(last, cp);
continue;
}