[Bug c++/87289] New: jdk11 plinux compiled with gcc 7.3 doesn't work with NativeImageBuffer

[pdbain at ca dot ibm.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87289

            Bug ID: 87289
           Summary: jdk11 plinux compiled with gcc 7.3 doesn't work with
                    NativeImageBuffer
           Product: gcc
           Version: 7.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pdbain at ca dot ibm.com
  Target Milestone: ---

Created attachment 44683
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44683&action=edit
Test code and sample source code

Further to https://github.com/eclipse/openj9/issues/2788

GCC does not compile "jnicsup.cpp" correctly when optimization is enabled.

It appears that "pushArguments()" is not placing the correct data on the Java
stack.
Inserting a printf makes the test pass.

To reproduce:

download and build OpenJ9 per instructions in
https://www.eclipse.org/openj9/oj9_build.html (use "git clone
https://github.com/ibmruntimes/openj9-openjdk-jdk11").  Replace
"openj9/runtime/vm/jnicsup.cpp" with the copy from the attached archive. Enable
or disable the printf on line 522.

To test, put "testgras.class" in the current directory and run

"java testgras"

(the "java" command will be in a directory called
"build/linux-ppc64le-normal-server-release/images/jdk/bin")

If the test is successful, no exception is thrown.

This bug may date back to version 5.