merge revision(s) 3be2acfafd3b3c6168e2266c7c6561d143d7ae5c: [Backport #19327]

	Fix re-embedding of strings during compaction

	The reference updating code for strings is not re-embedding strings
	because the code is incorrectly wrapped inside of a
	`if (STR_SHARED_P(obj))` clause. Shared strings can't be re-embedded
	so this ends up being a no-op. This means that strings can be moved to a
	large size pool during compaction, but won't be re-embedded, which would
	waste the space.
	---
	 gc.c                         | 16 +++++++++-------
	 string.c                     | 12 ++++++++----
	 test/ruby/test_gc_compact.rb |  8 ++++----
	 3 files changed, 21 insertions(+), 15 deletions(-)

1 files changed, 1 insertions, 1 deletions

diff --git a/version.h b/version.h
index 41ec61e156..9a73bc2e57 100644
--- a/version.h
+++ b/version.h
@@ -11,7 +11,7 @@
 # define RUBY_VERSION_MINOR RUBY_API_VERSION_MINOR
 #define RUBY_VERSION_TEENY 0
 #define RUBY_RELEASE_DATE RUBY_RELEASE_YEAR_STR"-"RUBY_RELEASE_MONTH_STR"-"RUBY_RELEASE_DAY_STR
-#define RUBY_PATCHLEVEL 14
+#define RUBY_PATCHLEVEL 15
 
 #include "ruby/version.h"
 #include "ruby/internal/abi.h"