merge revision(s) b555e659c4974acc423083b71b1bd5ec6a926046: [Backport #18388]

    Do not use `fcopyfile` if appending to non-empty file [Bug #18388]

    `fcopyfile` appends `src` to `to` and then truncates `to` to it's
    original size.
    ---
     io.c                 |  7 +++++++
     test/ruby/test_io.rb | 12 ++++++++++++
     2 files changed, 19 insertions(+)

1 files changed, 1 insertions, 1 deletions

diff --git a/version.h b/version.h
index 8afa4b53af..6fbb66953c 100644
--- a/version.h
+++ b/version.h
@@ -2,7 +2,7 @@
 # define RUBY_VERSION_MINOR RUBY_API_VERSION_MINOR
 #define RUBY_VERSION_TEENY 6
 #define RUBY_RELEASE_DATE RUBY_RELEASE_YEAR_STR"-"RUBY_RELEASE_MONTH_STR"-"RUBY_RELEASE_DAY_STR
-#define RUBY_PATCHLEVEL 215
+#define RUBY_PATCHLEVEL 216
 
 #define RUBY_RELEASE_YEAR 2022
 #define RUBY_RELEASE_MONTH 3