build.log: Output from failing command(s) repeated here - do not miss the hs_error file in case of crashes

[Baesken, Matthias]

Hello,   In case  of JVM crashes in the build  (yes they happen in development 😉 )  , we  print some info about the crash  at the end of the build log file
 In the   Output from failing command(s) repeated here  … section  .
This looks like  the following   (from a recent crash on AIX )  :

=== Output from failing command(s) repeated here ===
/opt/freeware/bin/printf "* For target jdk__optimize_image_exec:\n"
* For target jdk__optimize_image_exec:
(/opt/freeware/bin/grep -v -e "^Note: including file:" <   /nightly/output-jdk-test/make-support/failure-logs/jdk__optimize_image_exec.log || true) | /opt/freeware/bin/head -n 12
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x3c0009003cc0a080, pid=34341128, tid=258
#
# JRE version: OpenJDK Runtime Environment (14.0.1) (build 14.0.0.1-internal+0-adhoc.openjdk.jdk)
# Java VM: OpenJDK 64-Bit Server VM (14.0.0.1-internal+0-adhoc.openjdk.jdk, mixed mode, tiered, compressed oops, serial gc, aix-ppc64)
# Problematic frame:
# C  0x3c0009003cc0a080
#
# Core dump will be written. Default location:    /nightly/jdk/make/core or core.34341128
#

Unfortunately ,  we miss  the path to the hs_error file   which  is a pity because  this  is a VERY important  info  in the  error analysis .

The reason seems to be  that  we currently only  print  12 lines   (head -n 12)    and  this is not ehought to get the line with the hs_error file .
Could we switch to  15 lines ,  this would include  the hs_error file .

Change  would be done in  jdk/make/InitSupport.gmk     where  PrintFailureReports   is  done .


Best regards, Matthias