On Mon, 25 Aug 2025 09:53:10 GMT, Jayathirth D V <j...@openjdk.org> wrote:

>> We need to throw appropriate exception when we pass invalid image index 
>> values to ImageReader.getImageTypes().
>> We throw IOOBE in all other plugins except JPEG, Added appropriate check to 
>> throw IOOBE when JpegImageReader has invalid image index.
>
> Jayathirth D V has updated the pull request incrementally with one additional 
> commit since the last revision:
> 
>   Update image index verification function name

Changes requested by aivanov (Reviewer).

src/java.desktop/share/classes/com/sun/imageio/plugins/jpeg/JPEGImageReader.java
 line 848:

> 846:     public int getWidth(int imageIndex) throws IOException {
> 847:         verifyImageIndex(imageIndex);
> 848:         setThreadLock();

I wonder whether accessing `minIndex` inside `verifyImageIndex` requires a lock.

test/jdk/javax/imageio/plugins/jpeg/JpegNegativeImageIndexTest.java line 24:

> 22:  */
> 23: 
> 24: /**

Suggestion:

/*

Let us not use the javadoc comment syntax for jtreg tags.

test/jdk/javax/imageio/plugins/jpeg/JpegNegativeImageIndexTest.java line 60:

> 58:             ImageTypeSpecifier specifier = ir.getRawImageType(-1);
> 59:         } catch (IndexOutOfBoundsException e) {
> 60:             if (Objects.equals(e.getMessage(), "imageIndex < 0")) {

If we don't iterate over all readers but only the first one, throw the error 
before the `catch` block.

Inside the catch block, if the message isn't equal to the expected one, throw 
the error right away.

This allows removing indirection of using the `passed` field.

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

PR Review: https://git.openjdk.org/jdk/pull/26522#pullrequestreview-3151661604
PR Review Comment: https://git.openjdk.org/jdk/pull/26522#discussion_r2298230149
PR Review Comment: https://git.openjdk.org/jdk/pull/26522#discussion_r2298226685
PR Review Comment: https://git.openjdk.org/jdk/pull/26522#discussion_r2298240296

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