Try something

unicode-org · Jan 21, 2025 · 550372a · 550372a
1 parent 6c99853
commit 550372a
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/icu4j/main/core/src/test/java/com/ibm/icu/dev/test/rbbi/RBBITestMonkey.java b/icu4j/main/core/src/test/java/com/ibm/icu/dev/test/rbbi/RBBITestMonkey.java
@@ -1433,6 +1433,12 @@ void RunMonkey(BreakIterator  bi, RBBIMonkeyKind mk, String name, int  seed, int
                 if (c < 0) {   // TODO:  deal with sets containing strings.
                     errln("c < 0");
                 }
+                // Do not emit surrogates on Java 8, as the behaviour of regular expressions that
+                // match surrogates differs there.
+                if (System.getProperty("java.version").startsWith("1.") &&
+                        Character.isSurrogate((char)c)) {
+                    continue;
+                }
                 // Do not assemble a supplementary character from randomly generated separate surrogates.
                 //   (It could be a dictionary character)
                 if (c < 0x10000 && Character.isLowSurrogate((char)c) && testText.length() > 0 &&