This change fixes a build error during the generation of `ScopedMemoryAccess.java` when the sources are readonly, by using `cat a > b` instead of `cp a b` to avoid propagating the permissions to the generated source.
------------- Commit messages: - 8268296: ScopedMemoryAccess build error with readonly filesystems Changes: https://git.openjdk.java.net/jdk/pull/4380/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4380&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8268296 Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod Patch: https://git.openjdk.java.net/jdk/pull/4380.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/4380/head:pull/4380 PR: https://git.openjdk.java.net/jdk/pull/4380
