[jdk8u-dev] RFR: 8360869: jcstress is able to crash jdk8 on aarch64 with jfr on [v4]

[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 updated the pull request incrementally with one additional commit since the last revision:

  generad generated-configure
  
  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/f4c31107..e06588df

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=697&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=697&range=02-03

  Stats: 13 lines in 1 file changed: 13 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