RFR: JDK-8311285: report some fontconfig related environment variables in hs_err file

[Matthias Baesken]

On Tue, 4 Jul 2023 11:47:49 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

> There are a number of important environment variables influencing how fontconfig works.
> See for example
> https://man.archlinux.org/man/fonts-conf.5
> Some of them should be added to the list of reported environment variables in hs_err file because e.g. a bad setting for some of them can even lead sometimes to crashes.

Hi David ,  FONTCONFIG_USE_MMAP  sounds interesting, I saw this too in the list of environment variables. Should I add this one?

> And I find it hard to imagine how these particular ones might lead to crashes

Shared cache home directory (in a shared HOME shared between different hosts) was causing a lot of trouble and leading to crashes rather often in our AIX tests. So this one is interesting for sure.

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

PR Comment: https://git.openjdk.org/jdk/pull/14767#issuecomment-1621152185