Fix typr inference

Fixes oss-fuzz #45020

Author: dstogov

Zend/Optimizer/zend_inference.c

@@ -2661,6 +2661,7 @@ static zend_always_inline int _zend_update_type_info(
 		case ZEND_ASSIGN_DIM:
 			if (opline->op1_type == IS_CV) {
 				tmp = assign_dim_result_type(t1, t2, OP1_DATA_INFO(), opline->op2_type);
+				tmp |= ssa->var_info[ssa_op->op1_def].type & (MAY_BE_ARRAY_PACKED|MAY_BE_ARRAY_NUMERIC_HASH|MAY_BE_ARRAY_STRING_HASH);
 				UPDATE_SSA_TYPE(tmp, ssa_op->op1_def);
 				COPY_SSA_OBJ_TYPE(ssa_op->op1_use, ssa_op->op1_def);
 			}

ext/opcache/tests/jit/assign_dim_013.phpt

@@ -0,0 +1,26 @@
+--TEST--
+JIT ASSIGN_DIM: 013
+--INI--
+opcache.enable=1
+opcache.enable_cli=1
+opcache.file_update_protection=0
+opcache.jit_buffer_size=1M
+--FILE--
+<?php
+function test() {
+    for(;;) {
+        $arr[] = $obj = new stdClass;
+        $obj->y = set_error_handler(function(){});
+        foreach($obj as $y) {
+        }
+        $arr = ['' => y];
+    }
+}
+test();
+?>
+--EXPECTF--
+Fatal error: Uncaught Error: Undefined constant "y" in %sassign_dim_013.php:8
+Stack trace:
+#0 %sassign_dim_013.php(11): test()
+#1 {main}
+  thrown in %sassign_dim_013.php on line 8