Resolve bug #74188 (undefined statics raising with ?? operator)

3 files changed, 212 insertions, 78 deletions

diff --git a/Zend/tests/bug74188.phpt b/Zend/tests/bug74188.phpt
new file mode 100644
index 0000000000..3eb4facdd9
--- /dev/null
+++ b/Zend/tests/bug74188.phpt
@@ -0,0 +1,14 @@
+--TEST--
+Fixes bug 74188 (undeclared static variables emit a warning with ?? operator)
+--FILE--
+<?php
+abstract class Test
+{
+	public static function get()
+	{
+		static::$a ?? true;
+	}
+}
+Test::get();
+?>
+--EXPECT--
diff --git a/Zend/zend_vm_def.h b/Zend/zend_vm_def.h
index f5d8899324..a5ff72b668 100644
--- a/Zend/zend_vm_def.h
+++ b/Zend/zend_vm_def.h
@@ -1515,9 +1515,13 @@ ZEND_VM_HELPER_EX(zend_fetch_var_address_helper, CONST|TMPVAR|CV, UNUSED|CONST|V
 
 				/* check if static properties were destoyed */
 				if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL)) {
-					zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
-					FREE_OP1();
-					HANDLE_EXCEPTION();
+					if (type == BP_VAR_IS) {
+						retval = &EG(uninitialized_zval);
+					} else {
+						zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
+						FREE_OP1();
+						HANDLE_EXCEPTION();
+					}
 				}
 
 				ZEND_VM_C_GOTO(fetch_var_return);
@@ -1539,15 +1543,19 @@ ZEND_VM_HELPER_EX(zend_fetch_var_address_helper, CONST|TMPVAR|CV, UNUSED|CONST|V
 				
 				/* check if static properties were destoyed */
 				if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL)) {
-					zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
-					FREE_OP1();
-					HANDLE_EXCEPTION();
+					if (type == BP_VAR_IS) {
+						retval = &EG(uninitialized_zval);
+					} else {
+						zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
+						FREE_OP1();
+						HANDLE_EXCEPTION();
+					}
 				}
 
 				ZEND_VM_C_GOTO(fetch_var_return);
 			}
 		}
-		retval = zend_std_get_static_property(ce, name, 0);
+		retval = zend_std_get_static_property(ce, name, type == BP_VAR_IS);
 		if (UNEXPECTED(EG(exception))) {
 			if (OP1_TYPE != IS_CONST) {
 				zend_string_release(name);
@@ -1555,8 +1563,12 @@ ZEND_VM_HELPER_EX(zend_fetch_var_address_helper, CONST|TMPVAR|CV, UNUSED|CONST|V
 			FREE_OP1();
 			HANDLE_EXCEPTION();
 		}
-		if (OP1_TYPE == IS_CONST && retval) {
-			CACHE_POLYMORPHIC_PTR(Z_CACHE_SLOT_P(EX_CONSTANT(opline->op1)), ce, retval);
+		if (retval) {
+			if (OP1_TYPE == IS_CONST) {
+				CACHE_POLYMORPHIC_PTR(Z_CACHE_SLOT_P(EX_CONSTANT(opline->op1)), ce, retval);
+			}
+		} else {
+			retval = &EG(uninitialized_zval);
 		}
 
 		FREE_OP1();
diff --git a/Zend/zend_vm_execute.h b/Zend/zend_vm_execute.h
index 8ac72ed2e8..7f2996387c 100644
--- a/Zend/zend_vm_execute.h
+++ b/Zend/zend_vm_execute.h
@@ -5007,9 +5007,13 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_fetch_var_address_helper_SPEC_
 
 				/* check if static properties were destoyed */
 				if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL)) {
-					zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
+					if (type == BP_VAR_IS) {
+						retval = &EG(uninitialized_zval);
+					} else {
+						zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
 
-					HANDLE_EXCEPTION();
+						HANDLE_EXCEPTION();
+					}
 				}
 
 				goto fetch_var_return;
@@ -5031,15 +5035,19 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_fetch_var_address_helper_SPEC_
 
 				/* check if static properties were destoyed */
 				if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL)) {
-					zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
+					if (type == BP_VAR_IS) {
+						retval = &EG(uninitialized_zval);
+					} else {
+						zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
 
-					HANDLE_EXCEPTION();
+						HANDLE_EXCEPTION();
+					}
 				}
 
 				goto fetch_var_return;
 			}
 		}
-		retval = zend_std_get_static_property(ce, name, 0);
+		retval = zend_std_get_static_property(ce, name, type == BP_VAR_IS);
 		if (UNEXPECTED(EG(exception))) {
 			if (IS_CONST != IS_CONST) {
 				zend_string_release(name);
@@ -5047,8 +5055,12 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_fetch_var_address_helper_SPEC_
 
 			HANDLE_EXCEPTION();
 		}
-		if (IS_CONST == IS_CONST && retval) {
-			CACHE_POLYMORPHIC_PTR(Z_CACHE_SLOT_P(EX_CONSTANT(opline->op1)), ce, retval);
+		if (retval) {
+			if (IS_CONST == IS_CONST) {
+				CACHE_POLYMORPHIC_PTR(Z_CACHE_SLOT_P(EX_CONSTANT(opline->op1)), ce, retval);
+			}
+		} else {
+			retval = &EG(uninitialized_zval);
 		}
 
 	} else {
@@ -6963,9 +6975,13 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_fetch_var_address_helper_SPEC_
 
 				/* check if static properties were destoyed */
 				if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL)) {
-					zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
+					if (type == BP_VAR_IS) {
+						retval = &EG(uninitialized_zval);
+					} else {
+						zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
 
-					HANDLE_EXCEPTION();
+						HANDLE_EXCEPTION();
+					}
 				}
 
 				goto fetch_var_return;
@@ -6987,15 +7003,19 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_fetch_var_address_helper_SPEC_
 
 				/* check if static properties were destoyed */
 				if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL)) {
-					zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
+					if (type == BP_VAR_IS) {
+						retval = &EG(uninitialized_zval);
+					} else {
+						zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
 
-					HANDLE_EXCEPTION();
+						HANDLE_EXCEPTION();
+					}
 				}
 
 				goto fetch_var_return;
 			}
 		}
-		retval = zend_std_get_static_property(ce, name, 0);
+		retval = zend_std_get_static_property(ce, name, type == BP_VAR_IS);
 		if (UNEXPECTED(EG(exception))) {
 			if (IS_CONST != IS_CONST) {
 				zend_string_release(name);
@@ -7003,8 +7023,12 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_fetch_var_address_helper_SPEC_
 
 			HANDLE_EXCEPTION();
 		}
-		if (IS_CONST == IS_CONST && retval) {
-			CACHE_POLYMORPHIC_PTR(Z_CACHE_SLOT_P(EX_CONSTANT(opline->op1)), ce, retval);
+		if (retval) {
+			if (IS_CONST == IS_CONST) {
+				CACHE_POLYMORPHIC_PTR(Z_CACHE_SLOT_P(EX_CONSTANT(opline->op1)), ce, retval);
+			}
+		} else {
+			retval = &EG(uninitialized_zval);
 		}
 
 	} else {
@@ -7469,9 +7493,13 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_fetch_var_address_helper_SPEC_
 
 				/* check if static properties were destoyed */
 				if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL)) {
-					zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
+					if (type == BP_VAR_IS) {
+						retval = &EG(uninitialized_zval);
+					} else {
+						zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
 
-					HANDLE_EXCEPTION();
+						HANDLE_EXCEPTION();
+					}
 				}
 
 				goto fetch_var_return;
@@ -7493,15 +7521,19 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_fetch_var_address_helper_SPEC_
 
 				/* check if static properties were destoyed */
 				if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL)) {
-					zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
+					if (type == BP_VAR_IS) {
+						retval = &EG(uninitialized_zval);
+					} else {
+						zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
 
-					HANDLE_EXCEPTION();
+						HANDLE_EXCEPTION();
+					}
 				}
 
 				goto fetch_var_return;
 			}
 		}
-		retval = zend_std_get_static_property(ce, name, 0);
+		retval = zend_std_get_static_property(ce, name, type == BP_VAR_IS);
 		if (UNEXPECTED(EG(exception))) {
 			if (IS_CONST != IS_CONST) {
 				zend_string_release(name);
@@ -7509,8 +7541,12 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_fetch_var_address_helper_SPEC_
 
 			HANDLE_EXCEPTION();
 		}
-		if (IS_CONST == IS_CONST && retval) {
-			CACHE_POLYMORPHIC_PTR(Z_CACHE_SLOT_P(EX_CONSTANT(opline->op1)), ce, retval);
+		if (retval) {
+			if (IS_CONST == IS_CONST) {
+				CACHE_POLYMORPHIC_PTR(Z_CACHE_SLOT_P(EX_CONSTANT(opline->op1)), ce, retval);
+			}
+		} else {
+			retval = &EG(uninitialized_zval);
 		}
 
 	} else {
@@ -31389,9 +31425,13 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_fetch_var_address_helper_SPEC_
 
 				/* check if static properties were destoyed */
 				if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL)) {
-					zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
+					if (type == BP_VAR_IS) {
+						retval = &EG(uninitialized_zval);
+					} else {
+						zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
 
-					HANDLE_EXCEPTION();
+						HANDLE_EXCEPTION();
+					}
 				}
 
 				goto fetch_var_return;
@@ -31413,15 +31453,19 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_fetch_var_address_helper_SPEC_
 
 				/* check if static properties were destoyed */
 				if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL)) {
-					zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
+					if (type == BP_VAR_IS) {
+						retval = &EG(uninitialized_zval);
+					} else {
+						zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
 
-					HANDLE_EXCEPTION();
+						HANDLE_EXCEPTION();
+					}
 				}
 
 				goto fetch_var_return;
 			}
 		}
-		retval = zend_std_get_static_property(ce, name, 0);
+		retval = zend_std_get_static_property(ce, name, type == BP_VAR_IS);
 		if (UNEXPECTED(EG(exception))) {
 			if (IS_CV != IS_CONST) {
 				zend_string_release(name);
@@ -31429,8 +31473,12 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_fetch_var_address_helper_SPEC_
 
 			HANDLE_EXCEPTION();
 		}
-		if (IS_CV == IS_CONST && retval) {
-			CACHE_POLYMORPHIC_PTR(Z_CACHE_SLOT_P(EX_CONSTANT(opline->op1)), ce, retval);
+		if (retval) {
+			if (IS_CV == IS_CONST) {
+				CACHE_POLYMORPHIC_PTR(Z_CACHE_SLOT_P(EX_CONSTANT(opline->op1)), ce, retval);
+			}
+		} else {
+			retval = &EG(uninitialized_zval);
 		}
 
 	} else {
@@ -33617,9 +33665,13 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_fetch_var_address_helper_SPEC_
 
 				/* check if static properties were destoyed */
 				if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL)) {
-					zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
+					if (type == BP_VAR_IS) {
+						retval = &EG(uninitialized_zval);
+					} else {
+						zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
 
-					HANDLE_EXCEPTION();
+						HANDLE_EXCEPTION();
+					}
 				}
 
 				goto fetch_var_return;
@@ -33641,15 +33693,19 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_fetch_var_address_helper_SPEC_
 
 				/* check if static properties were destoyed */
 				if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL)) {
-					zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
+					if (type == BP_VAR_IS) {
+						retval = &EG(uninitialized_zval);
+					} else {
+						zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
 
-					HANDLE_EXCEPTION();
+						HANDLE_EXCEPTION();
+					}
 				}
 
 				goto fetch_var_return;
 			}
 		}
-		retval = zend_std_get_static_property(ce, name, 0);
+		retval = zend_std_get_static_property(ce, name, type == BP_VAR_IS);
 		if (UNEXPECTED(EG(exception))) {
 			if (IS_CV != IS_CONST) {
 				zend_string_release(name);
@@ -33657,8 +33713,12 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_fetch_var_address_helper_SPEC_
 
 			HANDLE_EXCEPTION();
 		}
-		if (IS_CV == IS_CONST && retval) {
-			CACHE_POLYMORPHIC_PTR(Z_CACHE_SLOT_P(EX_CONSTANT(opline->op1)), ce, retval);
+		if (retval) {
+			if (IS_CV == IS_CONST) {
+				CACHE_POLYMORPHIC_PTR(Z_CACHE_SLOT_P(EX_CONSTANT(opline->op1)), ce, retval);
+			}
+		} else {
+			retval = &EG(uninitialized_zval);
 		}
 
 	} else {
@@ -34565,9 +34625,13 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_fetch_var_address_helper_SPEC_
 
 				/* check if static properties were destoyed */
 				if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL)) {
-					zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
+					if (type == BP_VAR_IS) {
+						retval = &EG(uninitialized_zval);
+					} else {
+						zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
 
-					HANDLE_EXCEPTION();
+						HANDLE_EXCEPTION();
+					}
 				}
 
 				goto fetch_var_return;
@@ -34589,15 +34653,19 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_fetch_var_address_helper_SPEC_
 
 				/* check if static properties were destoyed */
 				if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL)) {
-					zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
+					if (type == BP_VAR_IS) {
+						retval = &EG(uninitialized_zval);
+					} else {
+						zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
 
-					HANDLE_EXCEPTION();
+						HANDLE_EXCEPTION();
+					}
 				}
 
 				goto fetch_var_return;
 			}
 		}
-		retval = zend_std_get_static_property(ce, name, 0);
+		retval = zend_std_get_static_property(ce, name, type == BP_VAR_IS);
 		if (UNEXPECTED(EG(exception))) {
 			if (IS_CV != IS_CONST) {
 				zend_string_release(name);
@@ -34605,8 +34673,12 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_fetch_var_address_helper_SPEC_
 
 			HANDLE_EXCEPTION();
 		}
-		if (IS_CV == IS_CONST && retval) {
-			CACHE_POLYMORPHIC_PTR(Z_CACHE_SLOT_P(EX_CONSTANT(opline->op1)), ce, retval);
+		if (retval) {
+			if (IS_CV == IS_CONST) {
+				CACHE_POLYMORPHIC_PTR(Z_CACHE_SLOT_P(EX_CONSTANT(opline->op1)), ce, retval);
+			}
+		} else {
+			retval = &EG(uninitialized_zval);
 		}
 
 	} else {
@@ -41826,9 +41898,13 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_fetch_var_address_helper_SPEC_
 
 				/* check if static properties were destoyed */
 				if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL)) {
-					zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
-					zval_ptr_dtor_nogc(free_op1);
-					HANDLE_EXCEPTION();
+					if (type == BP_VAR_IS) {
+						retval = &EG(uninitialized_zval);
+					} else {
+						zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
+						zval_ptr_dtor_nogc(free_op1);
+						HANDLE_EXCEPTION();
+					}
 				}
 
 				goto fetch_var_return;
@@ -41850,15 +41926,19 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_fetch_var_address_helper_SPEC_
 
 				/* check if static properties were destoyed */
 				if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL)) {
-					zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
-					zval_ptr_dtor_nogc(free_op1);
-					HANDLE_EXCEPTION();
+					if (type == BP_VAR_IS) {
+						retval = &EG(uninitialized_zval);
+					} else {
+						zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
+						zval_ptr_dtor_nogc(free_op1);
+						HANDLE_EXCEPTION();
+					}
 				}
 
 				goto fetch_var_return;
 			}
 		}
-		retval = zend_std_get_static_property(ce, name, 0);
+		retval = zend_std_get_static_property(ce, name, type == BP_VAR_IS);
 		if (UNEXPECTED(EG(exception))) {
 			if ((IS_TMP_VAR|IS_VAR) != IS_CONST) {
 				zend_string_release(name);
@@ -41866,8 +41946,12 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_fetch_var_address_helper_SPEC_
 			zval_ptr_dtor_nogc(free_op1);
 			HANDLE_EXCEPTION();
 		}
-		if ((IS_TMP_VAR|IS_VAR) == IS_CONST && retval) {
-			CACHE_POLYMORPHIC_PTR(Z_CACHE_SLOT_P(EX_CONSTANT(opline->op1)), ce, retval);
+		if (retval) {
+			if ((IS_TMP_VAR|IS_VAR) == IS_CONST) {
+				CACHE_POLYMORPHIC_PTR(Z_CACHE_SLOT_P(EX_CONSTANT(opline->op1)), ce, retval);
+			}
+		} else {
+			retval = &EG(uninitialized_zval);
 		}
 
 		zval_ptr_dtor_nogc(free_op1);
@@ -42829,9 +42913,13 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_fetch_var_address_helper_SPEC_
 
 				/* check if static properties were destoyed */
 				if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL)) {
-					zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
-					zval_ptr_dtor_nogc(free_op1);
-					HANDLE_EXCEPTION();
+					if (type == BP_VAR_IS) {
+						retval = &EG(uninitialized_zval);
+					} else {
+						zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
+						zval_ptr_dtor_nogc(free_op1);
+						HANDLE_EXCEPTION();
+					}
 				}
 
 				goto fetch_var_return;
@@ -42853,15 +42941,19 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_fetch_var_address_helper_SPEC_
 
 				/* check if static properties were destoyed */
 				if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL)) {
-					zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
-					zval_ptr_dtor_nogc(free_op1);
-					HANDLE_EXCEPTION();
+					if (type == BP_VAR_IS) {
+						retval = &EG(uninitialized_zval);
+					} else {
+						zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
+						zval_ptr_dtor_nogc(free_op1);
+						HANDLE_EXCEPTION();
+					}
 				}
 
 				goto fetch_var_return;
 			}
 		}
-		retval = zend_std_get_static_property(ce, name, 0);
+		retval = zend_std_get_static_property(ce, name, type == BP_VAR_IS);
 		if (UNEXPECTED(EG(exception))) {
 			if ((IS_TMP_VAR|IS_VAR) != IS_CONST) {
 				zend_string_release(name);
@@ -42869,8 +42961,12 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_fetch_var_address_helper_SPEC_
 			zval_ptr_dtor_nogc(free_op1);
 			HANDLE_EXCEPTION();
 		}
-		if ((IS_TMP_VAR|IS_VAR) == IS_CONST && retval) {
-			CACHE_POLYMORPHIC_PTR(Z_CACHE_SLOT_P(EX_CONSTANT(opline->op1)), ce, retval);
+		if (retval) {
+			if ((IS_TMP_VAR|IS_VAR) == IS_CONST) {
+				CACHE_POLYMORPHIC_PTR(Z_CACHE_SLOT_P(EX_CONSTANT(opline->op1)), ce, retval);
+			}
+		} else {
+			retval = &EG(uninitialized_zval);
 		}
 
 		zval_ptr_dtor_nogc(free_op1);
@@ -43240,9 +43336,13 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_fetch_var_address_helper_SPEC_
 
 				/* check if static properties were destoyed */
 				if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL)) {
-					zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
-					zval_ptr_dtor_nogc(free_op1);
-					HANDLE_EXCEPTION();
+					if (type == BP_VAR_IS) {
+						retval = &EG(uninitialized_zval);
+					} else {
+						zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
+						zval_ptr_dtor_nogc(free_op1);
+						HANDLE_EXCEPTION();
+					}
 				}
 
 				goto fetch_var_return;
@@ -43264,15 +43364,19 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_fetch_var_address_helper_SPEC_
 
 				/* check if static properties were destoyed */
 				if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL)) {
-					zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
-					zval_ptr_dtor_nogc(free_op1);
-					HANDLE_EXCEPTION();
+					if (type == BP_VAR_IS) {
+						retval = &EG(uninitialized_zval);
+					} else {
+						zend_throw_error(NULL, "Access to undeclared static property: %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(name));
+						zval_ptr_dtor_nogc(free_op1);
+						HANDLE_EXCEPTION();
+					}
 				}
 
 				goto fetch_var_return;
 			}
 		}
-		retval = zend_std_get_static_property(ce, name, 0);
+		retval = zend_std_get_static_property(ce, name, type == BP_VAR_IS);
 		if (UNEXPECTED(EG(exception))) {
 			if ((IS_TMP_VAR|IS_VAR) != IS_CONST) {
 				zend_string_release(name);
@@ -43280,8 +43384,12 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_fetch_var_address_helper_SPEC_
 			zval_ptr_dtor_nogc(free_op1);
 			HANDLE_EXCEPTION();
 		}
-		if ((IS_TMP_VAR|IS_VAR) == IS_CONST && retval) {
-			CACHE_POLYMORPHIC_PTR(Z_CACHE_SLOT_P(EX_CONSTANT(opline->op1)), ce, retval);
+		if (retval) {
+			if ((IS_TMP_VAR|IS_VAR) == IS_CONST) {
+				CACHE_POLYMORPHIC_PTR(Z_CACHE_SLOT_P(EX_CONSTANT(opline->op1)), ce, retval);
+			}
+		} else {
+			retval = &EG(uninitialized_zval);
 		}
 
 		zval_ptr_dtor_nogc(free_op1);