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8134541: latent concurrency bug in ScriptRunData

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Reviewed-by: honkar, dnguyen, serb
This commit is contained in:
Phil Race 2026-03-31 17:54:55 +00:00
parent 48132fbb65
commit e191df7f15
1 changed files with 4 additions and 3 deletions
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7
src/java.desktop/share/classes/sun/font/ScriptRunData.java
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@ -38,11 +38,12 @@ public final class ScriptRunData {
private static final int CHAR_START = 0;
private static final int CHAR_LIMIT = 0x110000;
private static int cache = 0;
private static volatile int cache = 0;
public static int getScript(int cp) {
int lcache = cache;
// optimize for runs of characters in the same script
if (cp >= data[cache] && cp < data[cache+2]) {
return data[cache+1];
if (cp >= data[lcache] && cp < data[lcache+2]) {
return data[lcache+1];
}
if ((cp >= CHAR_START) && (cp < CHAR_LIMIT)) {
int probe = dataPower;