infernap12/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2026-01-28 03:58:21 +00:00
Code Issues Packages Projects Releases Wiki Activity

8360255: runtime/jni/checked/TestLargeUTF8Length.java fails with -XX:-CompactStrings

Browse Source 
Reviewed-by: shade, kbarrett
This commit is contained in:
David Holmes 2025-06-26 01:02:03 +00:00
parent cf75f1f9c6
commit 1ca008fd02
1 changed files with 8 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
test/hotspot/jtreg/runtime/jni/checked/TestLargeUTF8Length.java
View File

@ -44,9 +44,14 @@ public class TestLargeUTF8Length {
static native void checkUTF8Length(String s, long utf8Length);
static void test() {
int length = Integer.MAX_VALUE/2 + 1;
char character = (char)0XD1; // N with tilde
long utf8Length = 2L * length;
// We want a string whose UTF-8 length is > Integer.MAX_VALUE, but
// whose "natural" length is < Integer.MAX_VALUE/2 so it can be
// created regardless of whether compact-strings are enabled or not.
// So we use a character that encodes as 3-bytes in UTF-8.
// U+08A0 : e0 a2 a0 : ARABIC LETTER BEH WITH SMALL V BELOW
char character = '\u08A0';
int length = Integer.MAX_VALUE/2 - 1;
long utf8Length = 3L * length;
char[] chrs = new char[length];
Arrays.fill(chrs, character);
String s = new String(chrs);