- Calling abstract methods should be a error for consistency reason.

- So in reflection_api we use the reflection_exception again.

Zend/zend_default_classes.c

@@ -25,7 +25,6 @@
 #include "zend_builtin_functions.h"
 
 zend_class_entry *default_exception_ptr;
-zend_class_entry *abstract_exception_ptr;
 
 static zend_object_value zend_default_exception_new(zend_class_entry *class_type TSRMLS_DC)
 {
@@ -347,9 +346,6 @@ static void zend_register_default_exception(TSRMLS_D)
 	zend_declare_property_null(default_exception_ptr, "file", sizeof("file")-1, ZEND_ACC_PROTECTED);
 	zend_declare_property_null(default_exception_ptr, "line", sizeof("line")-1, ZEND_ACC_PROTECTED);
 	zend_declare_property_null(default_exception_ptr, "trace", sizeof("trace")-1, ZEND_ACC_PROTECTED);
-
-	INIT_CLASS_ENTRY(ce, "abstract_exception", NULL);
-	abstract_exception_ptr = zend_register_internal_class_ex(&ce, default_exception_ptr, NULL TSRMLS_CC);
 }
 
 ZEND_API zend_class_entry *zend_exception_get_default(void)
@@ -357,11 +353,6 @@ ZEND_API zend_class_entry *zend_exception_get_default(void)
 	return default_exception_ptr;
 }
 
-ZEND_API zend_class_entry *zend_exception_get_abstract(void)
-{
-	return abstract_exception_ptr;
-}
-
 ZEND_API void zend_throw_exception_ex(zend_class_entry *exception_ce, long code TSRMLS_DC, char *format, ...)
 {
 	zval *ex;

Zend/zend_default_classes.h

@@ -25,7 +25,6 @@
 BEGIN_EXTERN_C()
 
 ZEND_API zend_class_entry *zend_exception_get_default(void);
-ZEND_API zend_class_entry *zend_exception_get_abstract(void);
 ZEND_API void zend_register_default_classes(TSRMLS_D);
 
 /* exception_ce   NULL or zend_exception_get_default() or a derived class 

Zend/zend_exceptions.c

@@ -25,7 +25,6 @@
 #include "zend_builtin_functions.h"
 
 zend_class_entry *default_exception_ptr;
-zend_class_entry *abstract_exception_ptr;
 
 static zend_object_value zend_default_exception_new(zend_class_entry *class_type TSRMLS_DC)
 {
@@ -347,9 +346,6 @@ static void zend_register_default_exception(TSRMLS_D)
 	zend_declare_property_null(default_exception_ptr, "file", sizeof("file")-1, ZEND_ACC_PROTECTED);
 	zend_declare_property_null(default_exception_ptr, "line", sizeof("line")-1, ZEND_ACC_PROTECTED);
 	zend_declare_property_null(default_exception_ptr, "trace", sizeof("trace")-1, ZEND_ACC_PROTECTED);
-
-	INIT_CLASS_ENTRY(ce, "abstract_exception", NULL);
-	abstract_exception_ptr = zend_register_internal_class_ex(&ce, default_exception_ptr, NULL TSRMLS_CC);
 }
 
 ZEND_API zend_class_entry *zend_exception_get_default(void)
@@ -357,11 +353,6 @@ ZEND_API zend_class_entry *zend_exception_get_default(void)
 	return default_exception_ptr;
 }
 
-ZEND_API zend_class_entry *zend_exception_get_abstract(void)
-{
-	return abstract_exception_ptr;
-}
-
 ZEND_API void zend_throw_exception_ex(zend_class_entry *exception_ce, long code TSRMLS_DC, char *format, ...)
 {
 	zval *ex;

Zend/zend_exceptions.h

@@ -25,7 +25,6 @@
 BEGIN_EXTERN_C()
 
 ZEND_API zend_class_entry *zend_exception_get_default(void);
-ZEND_API zend_class_entry *zend_exception_get_abstract(void);
 ZEND_API void zend_register_default_classes(TSRMLS_D);
 
 /* exception_ce   NULL or zend_exception_get_default() or a derived class 

Zend/zend_execute.c

@@ -33,7 +33,6 @@
 #include "zend_extensions.h"
 #include "zend_fast_cache.h"
 #include "zend_ini.h"
-#include "zend_default_classes.h"
 
 #define get_zval_ptr(node, Ts, should_free, type) _get_zval_ptr(node, Ts, should_free TSRMLS_CC)
 #define get_zval_ptr_ptr(node, Ts, type) _get_zval_ptr_ptr(node, Ts TSRMLS_CC)
@@ -2501,8 +2500,8 @@ int zend_do_fcall_common_helper(ZEND_OPCODE_HANDLER_ARGS)
 	zend_bool should_change_scope;
 
 	if (EX(function_state).function->common.fn_flags & ZEND_ACC_ABSTRACT) {
-		zend_throw_exception_ex(zend_exception_get_abstract(), 0 TSRMLS_CC, "Abstract method %s::%s called", EX(function_state).function->common.scope->name, EX(function_state).function->common.function_name);
-		goto fcall_exception;
+		zend_error(E_ERROR, "Abstract method %s::%s called", EX(function_state).function->common.scope->name, EX(function_state).function->common.function_name);
+		NEXT_OPCODE(); /* Never reached */
 	}
 
 	zend_ptr_stack_n_push(&EG(argument_stack), 2, (void *) EX(opline)->extended_value, NULL);
@@ -2635,7 +2634,6 @@ int zend_do_fcall_common_helper(ZEND_OPCODE_HANDLER_ARGS)
 	EG(function_state_ptr) = &EX(function_state);
 	zend_ptr_stack_clear_multiple(TSRMLS_C);
 
-fcall_exception:
 	if (EG(exception)) {
 		if (return_value_used && EX_T(EX(opline)->result.u.var).var.ptr) {
 			zval_ptr_dtor(&EX_T(EX(opline)->result.u.var).var.ptr);

Zend/zend_reflection_api.c

@@ -973,7 +973,7 @@ ZEND_METHOD(reflection_method, invoke)
 	if (!(mptr->common.fn_flags & ZEND_ACC_PUBLIC) ||
 		(mptr->common.fn_flags & ZEND_ACC_ABSTRACT)) {
 		if (mptr->common.fn_flags & ZEND_ACC_ABSTRACT) {
-			zend_throw_exception_ex(zend_exception_get_abstract(), 0 TSRMLS_CC, 
+			zend_throw_exception_ex(reflection_exception_ptr, 0 TSRMLS_CC, 
 				"Trying to invoke abstract method %s::%s", 
 				mptr->common.scope->name, mptr->common.function_name);
 		} else {

ext/reflection/php_reflection.c

@@ -973,7 +973,7 @@ ZEND_METHOD(reflection_method, invoke)
 	if (!(mptr->common.fn_flags & ZEND_ACC_PUBLIC) ||
 		(mptr->common.fn_flags & ZEND_ACC_ABSTRACT)) {
 		if (mptr->common.fn_flags & ZEND_ACC_ABSTRACT) {
-			zend_throw_exception_ex(zend_exception_get_abstract(), 0 TSRMLS_CC, 
+			zend_throw_exception_ex(reflection_exception_ptr, 0 TSRMLS_CC, 
 				"Trying to invoke abstract method %s::%s", 
 				mptr->common.scope->name, mptr->common.function_name);
 		} else {