After [JDK-8354686](https://bugs.openjdk.org/browse/JDK-8354686) the ubsan vptr checks still did not work. We finally found out, that they only work, if all linkage units are linked with the C++ compiler frontend as linker, especially the main executables (java, javac, ...) which are linked with the C compiler frontend. So for a ubsan enabled build on AIX we let everything link with the C++ compiler frontend. Background: The C++ compiler frontend inherently adds special static libraries which the C compiler does not. This results in missing symbols when trying to start a program and its shared libraries, when they were linked in mixed mode.
------------- Commit messages: - JDK-8368250 Changes: https://git.openjdk.org/jdk/pull/27468/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27468&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8368250 Stats: 9 lines in 3 files changed: 5 ins; 0 del; 4 mod Patch: https://git.openjdk.org/jdk/pull/27468.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/27468/head:pull/27468 PR: https://git.openjdk.org/jdk/pull/27468
