Avoid "Anonymous class wasn't preloaded" error by lazely loading of not preloaded part of a preloaded script

5 files changed, 39 insertions, 7 deletions

diff --git a/Zend/zend.c b/Zend/zend.c
index 97ac3327ca..a9ae03e624 100644
--- a/Zend/zend.c
+++ b/Zend/zend.c
@@ -81,6 +81,7 @@ ZEND_API char *(*zend_getenv)(char *name, size_t name_len);
 ZEND_API zend_string *(*zend_resolve_path)(const char *filename, size_t filename_len);
 ZEND_API int (*zend_post_startup_cb)(void) = NULL;
 ZEND_API void (*zend_post_shutdown_cb)(void) = NULL;
+ZEND_API int (*zend_preload_autoload)(zend_string *filename) = NULL;
 
 void (*zend_on_timeout)(int seconds);
 
diff --git a/Zend/zend.h b/Zend/zend.h
index 9aefc8d26a..94fd9a3559 100644
--- a/Zend/zend.h
+++ b/Zend/zend.h
@@ -292,6 +292,9 @@ extern ZEND_API zend_string *(*zend_resolve_path)(const char *filename, size_t f
 extern ZEND_API int (*zend_post_startup_cb)(void);
 extern ZEND_API void (*zend_post_shutdown_cb)(void);
 
+/* Callback for loading of not preloaded part of the script */
+extern ZEND_API int (*zend_preload_autoload)(zend_string *filename);
+
 ZEND_API ZEND_COLD void zend_error(int type, const char *format, ...) ZEND_ATTRIBUTE_FORMAT(printf, 2, 3);
 ZEND_API ZEND_COLD ZEND_NORETURN void zend_error_noreturn(int type, const char *format, ...) ZEND_ATTRIBUTE_FORMAT(printf, 2, 3);
 /* If filename is NULL the default filename is used. */
diff --git a/Zend/zend_compile.c b/Zend/zend_compile.c
index 5661f26439..970011ac08 100644
--- a/Zend/zend_compile.c
+++ b/Zend/zend_compile.c
@@ -1072,11 +1072,21 @@ ZEND_API int do_bind_class(zval *lcname, zend_string *lc_parent_name) /* {{{ */
 		ce = zend_hash_find_ptr(EG(class_table), Z_STR_P(lcname));
 		if (ce) {
 			zend_error_noreturn(E_COMPILE_ERROR, "Cannot declare %s %s, because the name is already in use", zend_get_object_type(ce), ZSTR_VAL(ce->name));
+			return FAILURE;
 		} else {
-			ZEND_ASSERT(EG(current_execute_data)->func->op_array.fn_flags & ZEND_ACC_PRELOADED);
-			zend_error_noreturn(E_ERROR, "Class %s wasn't preloaded", Z_STRVAL_P(lcname));
+			do {
+				if (zend_preload_autoload
+				  && zend_preload_autoload(EG(current_execute_data)->func->op_array.filename) == SUCCESS) {
+					zv = zend_hash_find_ex(EG(class_table), Z_STR_P(rtd_key), 1);
+					if (EXPECTED(zv != NULL)) {
+						break;
+					}
+				}
+				ZEND_ASSERT(EG(current_execute_data)->func->op_array.fn_flags & ZEND_ACC_PRELOADED);
+				zend_error_noreturn(E_ERROR, "Class %s wasn't preloaded", Z_STRVAL_P(lcname));
+				return FAILURE;
+			} while (0);
 		}
-		return FAILURE;
 	}
 
 	/* Register the derived class */
diff --git a/Zend/zend_vm_def.h b/Zend/zend_vm_def.h
index 0282c3c584..bb6a300a60 100644
--- a/Zend/zend_vm_def.h
+++ b/Zend/zend_vm_def.h
@@ -7317,8 +7317,17 @@ ZEND_VM_HANDLER(146, ZEND_DECLARE_ANON_CLASS, ANY, ANY, CACHE_SLOT)
 		zv = zend_hash_find_ex(EG(class_table), rtd_key, 1);
 		if (UNEXPECTED(zv == NULL)) {
 			SAVE_OPLINE();
-			ZEND_ASSERT(EX(func)->op_array.fn_flags & ZEND_ACC_PRELOADED);
-			zend_error_noreturn(E_ERROR, "Anonymous class wasn't preloaded");
+			do {
+				if (zend_preload_autoload
+				  && zend_preload_autoload(EX(func)->op_array.filename) == SUCCESS) {
+					zv = zend_hash_find_ex(EG(class_table), rtd_key, 1);
+					if (EXPECTED(zv != NULL)) {
+						break;
+					}
+				}
+				ZEND_ASSERT(EX(func)->op_array.fn_flags & ZEND_ACC_PRELOADED);
+				zend_error_noreturn(E_ERROR, "Anonymous class wasn't preloaded");
+			} while (0);
 		}
 		ZEND_ASSERT(zv != NULL);
 		ce = Z_CE_P(zv);
diff --git a/Zend/zend_vm_execute.h b/Zend/zend_vm_execute.h
index d79bdb1c1f..722053bbdc 100644
--- a/Zend/zend_vm_execute.h
+++ b/Zend/zend_vm_execute.h
@@ -2449,8 +2449,17 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL ZEND_DECLARE_ANON_CLASS_SPEC_HANDLE
 		zv = zend_hash_find_ex(EG(class_table), rtd_key, 1);
 		if (UNEXPECTED(zv == NULL)) {
 			SAVE_OPLINE();
-			ZEND_ASSERT(EX(func)->op_array.fn_flags & ZEND_ACC_PRELOADED);
-			zend_error_noreturn(E_ERROR, "Anonymous class wasn't preloaded");
+			do {
+				if (zend_preload_autoload
+				  && zend_preload_autoload(EX(func)->op_array.filename) == SUCCESS) {
+					zv = zend_hash_find_ex(EG(class_table), rtd_key, 1);
+					if (EXPECTED(zv != NULL)) {
+						break;
+					}
+				}
+				ZEND_ASSERT(EX(func)->op_array.fn_flags & ZEND_ACC_PRELOADED);
+				zend_error_noreturn(E_ERROR, "Anonymous class wasn't preloaded");
+			} while (0);
 		}
 		ZEND_ASSERT(zv != NULL);
 		ce = Z_CE_P(zv);