[8u] backport of 8148353: [linux-sparc] Crash in libawt.so on Linux SPARC

[Roland Westrelin]

Hi,

Please approve and review the following backport to 8u.

8148353 was pushed to jdk9 last week (on Wednesday) and it hasn’t caused any new failures during nightly testing. The change doesn’t apply cleanly to 8u: I had to rework the test because the infrastructure to run native jtreg tests doesn’t seem to exist in 8. I restricted the test to linux-sparc to keep it simple.

https://bugs.openjdk.java.net/browse/JDK-8148353
http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/1f4f4866aee0

New webrev:
http://cr.openjdk.java.net/~roland/8148353/webrev.8u.00/

review thread:
http://mail.openjdk.java.net/pipermail/hotspot-compiler-dev/2016-February/thread.html#21530

Note that when I pushed 8148353 to 9, the fix version was set to 8 and so a backport was created for 9.

Roland.