merge revision(s) 72eb33066fa9e7dacb7470cd140b219abe37667e: [Backport #19320]

	Fix off-by-one error in rb_vm_each_stack_value

	Applying the following patch to test/erb/test_erb.rb and running that
	file will cause Ruby to crash on my machine (macOS 13.1 on M1 Pro):

	```
	--- a/test/erb/test_erb.rb
	+++ b/test/erb/test_erb.rb
	@@ -7,6 +7,12 @@
	 class TestERB < Test::Unit::TestCase
	   class MyError < RuntimeError ; end

	+  def setup
	+    GC.auto_compact = true
	+    GC.stress = true
	+    GC.verify_compaction_references(expand_heap: true, toward: :empty)
	+  end
	+
	```

	It crashes with the following log:

	```
	/Users/peter/src/ruby/lib/erb/compiler.rb:276: [BUG] Segmentation fault at 0x00000001083a8690
	...
	-- C level backtrace information -------------------------------------------
	...
	/Users/peter/src/ruby/build/ruby(rb_vm_each_stack_value+0xa8) [0x104cc3a44] ../vm.c:2737
	/Users/peter/src/ruby/build/ruby(rb_vm_each_stack_value+0xa8) [0x104cc3a44] ../vm.c:2737
	/Users/peter/src/ruby/build/ruby(check_stack_for_moved+0x2c) [0x104b272a4] ../gc.c:5512
	/Users/peter/src/ruby/build/ruby(gc_compact_finish) ../gc.c:5534
	/Users/peter/src/ruby/build/ruby(gc_sweep_compact) ../gc.c:8653
	/Users/peter/src/ruby/build/ruby(gc_sweep) ../gc.c:6196
	/Users/peter/src/ruby/build/ruby(has_sweeping_pages+0x0) [0x104b19c54] ../gc.c:9568
	/Users/peter/src/ruby/build/ruby(gc_rest) ../gc.c:9570
	```

	This crash happens because it's reading the VALUE at sp. But since
	sp points to the top of the stack, it's reading the VALUE above the
	top of the stack, which is causing this segfault.

	Fixes [Bug #19320]
	---
	 vm.c | 2 +-
	 1 file changed, 1 insertion(+), 1 deletion(-)

2 files changed, 2 insertions, 2 deletions

diff --git a/version.h b/version.h
index efbaf03c7d..e5f8bcfa96 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 17
+#define RUBY_PATCHLEVEL 18
 
 #include "ruby/version.h"
 #include "ruby/internal/abi.h"
diff --git a/vm.c b/vm.c
index 4c2ef9834e..d009a5f64a 100644
--- a/vm.c
+++ b/vm.c
@@ -2732,7 +2732,7 @@ rb_vm_each_stack_value(void *ptr, void (*cb)(VALUE, void*), void *ctx)
                     if (ec->vm_stack) {
                         VALUE *p = ec->vm_stack;
                         VALUE *sp = ec->cfp->sp;
-                        while (p <= sp) {
+                        while (p < sp) {
                             if (!rb_special_const_p(*p)) {
                                 cb(*p, ctx);
                             }