[jdk11u-dev] RFR: 8348597: Update HarfBuzz to 10.4.0 [v2]

Antonio Vieiro duke at openjdk.org
Mon May 12 08:32:59 UTC 2025


> Backport of [JDK-8348597](https://bugs.openjdk.org/browse/JDK-8348597) from JDK17 that updates HarfBuzz to 10.4.0 (which [improves drawing performande by 10+% and includes different build fixes](https://newreleases.io/project/github/harfbuzz/harfbuzz/release/10.4.0)). Backport is not clean because it required adapting `make/lib/Awt2dLibraries.gmk` to fit JDK11.
> 
> Even though the backport built correctly, the resulting `jdk/lib/libfontmanager.so` contained undefined symbols that caused Swing tests to fail with `UnsatisfiedLinkError`. This is because JDK11 is missing [JDK-8319197](https://bugs.openjdk.org/browse/JDK-8319197) that excludes hb-subset from compilation, so this is also included as the second commit in the pull request.
> 
> While at it, a third commit adds an additional `-Wno-attributes` flag to `HARFBUZZ_DISABLED_WARNINGS_CXX_gcc`, restoring the capability to build JDK11 on Linux with `gcc-4.8.5`  (this is an old version of gcc, dating from 2015, but it's still the system gcc version in RHEL-7).
> 
> Tested 
> 
> - on Windows 10 with `jdk:jfc_demo`. 
> - on Linux with `jdk:jfc_demo`, with 
>     - `gcc 4.8.5/harfbuzz-1.7.5 (x86_64 & s390x)`, 
>     - `gcc 8.5.0/harfbuzz-1.7.5 (x86_64)`, 
>     - `gcc 11.5.0/harfbuzz-2.7.4 (x86_64)` 
>     - and `gcc 14.2.1/harfbuzz-9.0.0 (x86_64)`
> 
> with both `--with-harfbuzz=system` and `--with-harfbuzz=bundled`.

Antonio Vieiro has updated the pull request incrementally with one additional commit since the last revision:

  Removed parentheses and use-after-free (tested with gcc 14 & gcc 4.8.5)

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

Changes:
  - all: https://git.openjdk.org/jdk11u-dev/pull/3026/files
  - new: https://git.openjdk.org/jdk11u-dev/pull/3026/files/8064a5d9..25b84f6a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=3026&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=3026&range=00-01

  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/3026.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/3026/head:pull/3026

PR: https://git.openjdk.org/jdk11u-dev/pull/3026


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