[jdk8u-dev] RFR: 8360869: jcstress is able to crash jdk8 on aarch64 with jfr on [v5]

[Jiří Vaněk]

> We are seeing rare crashes in jcstress with jdk8 on aarch64 with jfron. Those crashes are real, however we were not able to reproduce with builds on gcc 5 and up. The real culprint was not found. but gcc version on aarch64 should be checked.  Ideal version seems 7, but I'm not that bold.
> 
> I think this change must be accompanied by regenerating  `generated-configure` but am not sure with process on it.

Jiří Vaněk has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR. The pull request contains one new commit since the last revision:

  regenerated generated-configure by self built autoconf 2.69
  
  Skipping about 50 hunks like:
  @@ -50158,7 +50167,7 @@ ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
   /* end confdefs.h.  */
  
   int
  -main (void)
  +main ()
   {
   return 0;
     ;

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

Changes:
  - all: https://git.openjdk.org/jdk8u-dev/pull/697/files
  - new: https://git.openjdk.org/jdk8u-dev/pull/697/files/e06588df..78ee959b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=697&range=04
 - incr: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=697&range=03-04

  Stats: 0 lines in 0 files changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/697.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev.git pull/697/head:pull/697

PR: https://git.openjdk.org/jdk8u-dev/pull/697