The change from grep to awk in JDK-8244248 and further bug fixed in JDK-8244756 still has invalid syntax. This causes some awk (most notably gawk, the most commonly used) to complain:
gawk: cmd. line:1: warning: regexp escape sequence `"' is not a known regexp operator This is annoying and should be fixed. ------------- Commit messages: - 8256538: Fix annoying awk warning in configure for java versions Changes: https://git.openjdk.java.net/jdk/pull/1285/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1285&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8256538 Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod Patch: https://git.openjdk.java.net/jdk/pull/1285.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/1285/head:pull/1285 PR: https://git.openjdk.java.net/jdk/pull/1285