[8u] RFR: 8210836: Build fails with warn_unused_result in openjdk/src/jdk.hotspot.agent/linux/native/libsaproc/ps_core.c

[Severin Gehwolf]

Hi,

Could somebody please review this 8u backport of 8210836 as I'd like to
get 8210647 (opt for sa) backported to 8u as well? Unfortunately the
change from JDK 12 doesn't apply cleanly so I've included select
changes from 8140482 so that the backport remains minimal. If anything,
this makes the code more robust I'd think.

Bug: https://bugs.openjdk.java.net/browse/JDK-8210836
webrev: http://cr.openjdk.java.net/~sgehwolf/webrevs/JDK-8210836/jdk8/webrev.01/

Testing: Manual testing of loading core file in SA on linux. Stepping
through code in the debugger. Basic jsadebugd core file loading.

Thoughts?

Thanks,
Severin