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8287003: InputStreamReader::read() can return zero despite writing a char in the buffer
Backports a fix for a potential data-loss defect from JDK19 to JDK17.
This change is not clean, but the conflict is minimal and localized to StreamDecoder.java.
Viewing this diff alongside the original fix here and expanding context upward a bit should be illuminating. The conflict is due to structural/indentation difference when the lock acquisition at L158 was hoisted into a separate method. That happened here (wherein this file has an ugly diff obscuring relatively simple changes).
Additional testing:
- [x] New regression test fails without the fix, passes with it
- [x] linux-x86_64-server-release:
JTREG_KEYWORDS="\!headful & \!external-dep & \!printer" make test(tier1-3)
Progress
- [ ] Change must be properly reviewed (1 review required, with at least 1 Reviewer)
- [x] Change must not contain extraneous whitespace
- [ ] JDK-8287003 needs maintainer approval
- [x] Commit message must refer to an issue
Error
⚠️ OCA signatory status must be verified
Issue
- JDK-8287003: InputStreamReader::read() can return zero despite writing a char in the buffer (Bug - P4)
Reviewing
Using git
Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk17u-dev.git pull/2726/head:pull/2726
$ git checkout pull/2726
Update a local copy of the PR:
$ git checkout pull/2726
$ git pull https://git.openjdk.org/jdk17u-dev.git pull/2726/head
Using Skara CLI tools
Checkout this PR locally:
$ git pr checkout 2726
View PR using the GUI difftool:
$ git pr show -t 2726
Using diff file
Download this PR as a diff file:
https://git.openjdk.org/jdk17u-dev/pull/2726.diff
Hi @toddjonker, welcome to this OpenJDK project and thanks for contributing!
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@toddjonker This change now passes all automated pre-integration checks.
ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.
After integration, the commit message for the final commit will be:
8287003: InputStreamReader::read() can return zero despite writing a char in the buffer
Reviewed-by: phh
You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.
At the time when this comment was updated there had been 38 new commits pushed to the master branch:
- a9d755ca35b6bd952c5e48c2975d1c813cb5b0cd: 8336342: Fix known X11 library locations in sysroot
- 7374e7d9060abc9519180aeeb7f0a6f1234e62e7: 8336343: Add more known sysroot library locations for ALSA
- fd38e86f84b0c1044ef6fce3836fc319e3df646e: 8338286: GHA: Demote x86_32 to hotspot build only
- ada58fa55bb265aa62bbe9389d08cbc39e3e32e0: 8336854: CAInterop.java#actalisauthenticationrootca conflicted with /manual and /timeout
- 6f382d1fcfb514ab11e991ceb3c94967e8cbc054: 8332903: ubsan: opto/output.cpp:1002:18: runtime error: load of value 171, which is not a valid value for type 'bool'
- e50b81503b0ee3cd3116345ff6bf31fa591dd3fc: 8339081: Bump update version for OpenJDK: jdk-17.0.14
- 99b7468ef39571d5276b071f7040e2dfb01f703c: 8330814: Cleanups for KeepAliveCache tests
- 03cbfaa733bc6a59da6ba5c0d0918245e534752a: 8315024: Vector API FP reduction tests should not test for exact equality
- 803c2c27d88ee0948611f11f1d099d7fe5c7d593: 8302800: Augment NaN handling tests of FDLIBM methods
- cd0bb4d31ee53947234c717782f9d9bf9b488986: 8310683: Refactor StandardCharset/standard.java to use JUnit
- ... and 28 more: https://git.openjdk.org/jdk17u-dev/compare/2e9152dc268ee946680f274c9e6006edfb8d0398...master
As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.
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This backport pull request has now been updated with issue from the original commit.
/covered
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⚠️ @toddjonker This change is now ready for you to apply for maintainer approval. This can be done directly in each associated issue or by using the /approval command.
/approval request Backports to JDK17 a fix for a potential data-loss defect fixed in JDK19.
This change is not clean, but the conflict is minimal and localized to StreamDecoder.java; see PR for explanation of the structural conflict.
Passes headless tests tier 1-3.
@toddjonker 8287003: The approval request has been created successfully.
/sponsor
@phohensee The change author (@toddjonker) must issue an integrate command before the integration can be sponsored.
/integrate
@toddjonker Your change (at version cbc1398810aa928440e8f5f89c9e6ab212f76259) is now ready to be sponsored by a Committer.
/sponsor
Going to push as commit 42b5e12b58f6f6014ff841fe980fcf160c0330e0.
Since your change was applied there have been 40 commits pushed to the master branch:
- 3ddae292e04a66e03d2cb761826dfab08ace7108: 8331789: ubsan: deoptimization.cpp:403:29: runtime error: load of value 208, which is not a valid value for type 'bool'
- acfce69612d5e6f18c48551417ba6702ab84e5b6: 8332904: ubsan ppc64le: c1_LIRGenerator_ppc.cpp:581:21: runtime error: signed integer overflow: 9223372036854775807 + 1 cannot be represented in type 'long int'
- a9d755ca35b6bd952c5e48c2975d1c813cb5b0cd: 8336342: Fix known X11 library locations in sysroot
- 7374e7d9060abc9519180aeeb7f0a6f1234e62e7: 8336343: Add more known sysroot library locations for ALSA
- fd38e86f84b0c1044ef6fce3836fc319e3df646e: 8338286: GHA: Demote x86_32 to hotspot build only
- ada58fa55bb265aa62bbe9389d08cbc39e3e32e0: 8336854: CAInterop.java#actalisauthenticationrootca conflicted with /manual and /timeout
- 6f382d1fcfb514ab11e991ceb3c94967e8cbc054: 8332903: ubsan: opto/output.cpp:1002:18: runtime error: load of value 171, which is not a valid value for type 'bool'
- e50b81503b0ee3cd3116345ff6bf31fa591dd3fc: 8339081: Bump update version for OpenJDK: jdk-17.0.14
- 99b7468ef39571d5276b071f7040e2dfb01f703c: 8330814: Cleanups for KeepAliveCache tests
- 03cbfaa733bc6a59da6ba5c0d0918245e534752a: 8315024: Vector API FP reduction tests should not test for exact equality
- ... and 30 more: https://git.openjdk.org/jdk17u-dev/compare/2e9152dc268ee946680f274c9e6006edfb8d0398...master
Your commit was automatically rebased without conflicts.
@phohensee @toddjonker Pushed as commit 42b5e12b58f6f6014ff841fe980fcf160c0330e0.
:bulb: You may see a message that your pull request was closed with unmerged commits. This can be safely ignored.