RFR: 8355746: Start of release updates for JDK 26

[Chen Liang]

On Fri, 2 May 2025 14:48:01 GMT, Nizar Benalla <nbenalla at openjdk.org> wrote:

> Get JDK 26 underway.

Changes requested by liach (Reviewer).

make/conf/version-numbers.conf line 36:

> 34: DEFAULT_VERSION_EXTRA2=0
> 35: DEFAULT_VERSION_EXTRA3=0
> 36: DEFAULT_VERSION_DATE=2026-03-16

Is this accurate?

src/jdk.compiler/share/classes/com/sun/tools/javac/processing/PrintingProcessor.java line 58:

> 56:  */
> 57: @SupportedAnnotationTypes("*")
> 58: @SupportedSourceVersion(SourceVersion.RELEASE_26)

This processor should emulate `com.sun.tools.jdeprscan.TraverseProc` and override `getSupportedSourceVersion`.

test/hotspot/jtreg/testlibrary/asm/org/objectweb/asm/ClassReader.java line 229:

> 227:         // Check the class' major_version. This field is after the magic and minor_version fields, which
> 228:         // use 4 and 2 bytes respectively.
> 229:         if (checkClassVersion && readShort(classFileOffset + 6) > Opcodes.V26) {

Please do not change ASM - if a test uses ASM to generate or parse later class files, they must migrate to the ClassFile API.  Open a JBS issue and identify the hotspot tests failing without this change.

test/langtools/tools/javac/options/HelpOutputColumnWidthTest.java line 50:

> 48: public class HelpOutputColumnWidthTest extends TestRunner {
> 49: 
> 50:     public static final int MAX_COLUMNS = 84;

What is this for?

-------------

PR Review: https://git.openjdk.org/jdk/pull/25008#pullrequestreview-2812349246
PR Review Comment: https://git.openjdk.org/jdk/pull/25008#discussion_r2071811476
PR Review Comment: https://git.openjdk.org/jdk/pull/25008#discussion_r2071815767
PR Review Comment: https://git.openjdk.org/jdk/pull/25008#discussion_r2071819374
PR Review Comment: https://git.openjdk.org/jdk/pull/25008#discussion_r2071817584