diff --git a/Zend/zend_ast.c b/Zend/zend_ast.c
index cd8e6792d031f..764cac3f12af2 100644
--- a/Zend/zend_ast.c
+++ b/Zend/zend_ast.c
@@ -1247,6 +1247,12 @@ static zend_result ZEND_FASTCALL zend_ast_evaluate_inner(
 		}
 		case ZEND_AST_OP_ARRAY:
 		{
+			// Preloading will attempt to resolve constants but objects can't be stored in shm
+			// Aborting here to store the const AST instead
+			if (CG(in_compilation)) {
+				return FAILURE;
+			}
+
 			zend_function *func = (zend_function *)zend_ast_get_op_array(ast)->op_array;
 
 			zend_create_closure(result, func, scope, scope, NULL);
diff --git a/Zend/zend_call_stack.h b/Zend/zend_call_stack.h
index fee528c150f08..58e91694f93f2 100644
--- a/Zend/zend_call_stack.h
+++ b/Zend/zend_call_stack.h
@@ -21,6 +21,9 @@
 
 #include "zend.h"
 #include "zend_portability.h"
+#ifdef _MSC_VER
+# include <intrin.h>
+#endif
 #ifdef __APPLE__
 # include <pthread.h>
 #endif
diff --git a/build/gen_stub.php b/build/gen_stub.php
index 9cd9b9a18768c..2670e85458dba 100755
--- a/build/gen_stub.php
+++ b/build/gen_stub.php
@@ -2235,7 +2235,7 @@ public function __clone()
 
 class EvaluatedValue
 {
-    public /* readonly */ mixed $value;
+    public /* readonly */ /* mixed */ $value;
     public SimpleType $type;
     public Expr $expr;
     public bool $isUnknownConstValue;
diff --git a/ext/opcache/tests/preload_gh21059.inc b/ext/opcache/tests/preload_gh21059.inc
new file mode 100644
index 0000000000000..8f93bb45020bb
--- /dev/null
+++ b/ext/opcache/tests/preload_gh21059.inc
@@ -0,0 +1,7 @@
+<?php
+
+class Foo {
+    public const C = static function() {
+        echo "Hello world\n";
+    };
+}
diff --git a/ext/opcache/tests/preload_gh21059.phpt b/ext/opcache/tests/preload_gh21059.phpt
new file mode 100644
index 0000000000000..39e7aceae942e
--- /dev/null
+++ b/ext/opcache/tests/preload_gh21059.phpt
@@ -0,0 +1,18 @@
+--TEST--
+GH-21059: Segfault when preloading constant AST closure
+--INI--
+opcache.enable=1
+opcache.enable_cli=1
+opcache.preload={PWD}/preload_gh21059.inc
+--EXTENSIONS--
+opcache
+--SKIPIF--
+<?php
+if (PHP_OS_FAMILY == 'Windows') die('skip Preloading is not supported on Windows');
+?>
+--FILE--
+<?php
+(Foo::C)();
+?>
+--EXPECT--
+Hello world