[12] Gcc 8.1 HarfBuzz library compilation issues (original) (raw)

Simon Tooke stooke at redhat.com
Tue Nov 20 14:48:27 UTC 2018

On 2018-11-20 5:31 a.m., Magnus Ihse Bursie wrote:

On 2018-11-19 22:22, Simon Tooke wrote:

Hello,

I've been looking at compiling the JDK with GCC 8.1, and trying to fix issues upstream as I find them. Nice! If you find issues in the JDK source code per se, please let us know. :) Sooner or later, we'll have to support gcc 8 properly anyway, might just as well try to clear the path already.

I noticed yesterday that https://bugs.openjdk.java.net/browse/JDK-8213153 from Dmitry Chuyko is also working on GCC 8.  I am not sure how far down the rabbit hole he is, but I (with the kind assistance of Severin Gehwolf since I'm not a committer) am submitting a series of patches to move towards that. I have a JDK tree compiling with 8.1, but it still has to disable warnings in more places than I feel comfortable with.

/Magnus For example the version of HarfBuzz shipped in the JDK has some issues with template specialization and with clearing a struct via memset() (thus bypassing C++ member access restrictions).

I've had changes to address these issues accepted upstream [1], and I was wondering if it is appropriate for me to file an issue to backport those fixes (I have a patch ready) or do you prefer to wait until HarfBuzz is upgraded to the latest version during the natural course of JDK development. (Be aware that the JDK is on a 1.7 version, while these fixes are in a 2.X version). Thanks, -Simon [1] https://github.com/harfbuzz/harfbuzz/pull/1334

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