When building with ubsan enabled (--enable-uban) on Linux x86_64 and doing jtreg tests afterwards I run into this error :
/jdk/src/java.base/unix/native/libjava/ProcessImpl_md.c:562:5: runtime error: null pointer passed as argument 2, which is declared to never be null #0 0x7fd95bec78d8 in spawnChild /jdk/src/java.base/unix/native/libjava/ProcessImpl_md.c:562 #1 0x7fd95bec78d8 in startChild /jdk/src/java.base/unix/native/libjava/ProcessImpl_md.c:612 #2 0x7fd95bec78d8 in Java_java_lang_ProcessImpl_forkAndExec /jdk/src/java.base/unix/native/libjava/ProcessImpl_md.c:712 #3 0x7fd93797a06d (<unknown module>) this is the memcpy call getting an unexpected null pointer : memcpy(buf+offset, c->pdir, sp.dirlen); gets a second parameter null. Something similar was discussed and fixed here https://bugs.python.org/issue27570 for Python . Similar issue in OpenJDK _ https://bugs.openjdk.org/browse/JDK-8332473 8332473: ubsan: growableArray.hpp:290:10: runtime error: null pointer passed as argument 1, which is declared to never be null ------------- Commit messages: - JDK-8332589 Changes: https://git.openjdk.org/jdk/pull/19329/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19329&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8332589 Stats: 4 lines in 1 file changed: 2 ins; 0 del; 2 mod Patch: https://git.openjdk.org/jdk/pull/19329.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/19329/head:pull/19329 PR: https://git.openjdk.org/jdk/pull/19329