patch 8.2.3113: no error when for loop variable shadows script variable

Problem:    No error when for loop variable shadows script variable.
Solution:   Check for the error. (closes #8512)

diff --git a/src/eval.c b/src/eval.c
index 1a84d2c1f5fc09ed932c04f655d70c5f2d4ef06c..e0f0816030de021ec05af062f189580a777d1696 100644 (file)
--- a/src/eval.c
+++ b/src/eval.c
@@ -1777,7 +1777,10 @@ next_for_item(void *fi_void, char_u *arg)
     forinfo_T  *fi = (forinfo_T *)fi_void;
     int                result;
     int                flag = ASSIGN_FOR_LOOP | (in_vim9script()
-                        ? (ASSIGN_FINAL | ASSIGN_DECL | ASSIGN_NO_MEMBER_TYPE)
+                        ? (ASSIGN_FINAL
+                            // first round: error if variable exists
+                            | (fi->fi_bi == 0 ? 0 : ASSIGN_DECL)
+                            | ASSIGN_NO_MEMBER_TYPE)
                         : 0);
     listitem_T *item;
 
@@ -1807,6 +1810,7 @@ next_for_item(void *fi_void, char_u *arg)
        tv.v_lock = VAR_FIXED;
        tv.vval.v_string = vim_strnsave(fi->fi_string + fi->fi_byte_idx, len);
        fi->fi_byte_idx += len;
+       ++fi->fi_bi;
        result = ex_let_vars(arg, &tv, TRUE, fi->fi_semicolon,
                                            fi->fi_varcount, flag, NULL) == OK;
        vim_free(tv.vval.v_string);
@@ -1819,6 +1823,7 @@ next_for_item(void *fi_void, char_u *arg)
     else
     {
        fi->fi_lw.lw_item = item->li_next;
+       ++fi->fi_bi;
        result = (ex_let_vars(arg, &item->li_tv, TRUE, fi->fi_semicolon,
                                           fi->fi_varcount, flag, NULL) == OK);
     }

diff --git a/src/testdir/test_vim9_script.vim b/src/testdir/test_vim9_script.vim
index 9d54899a66f63cd41bf450e2d7d2d70b90f4b10b..f5dc26e46030c2a685097eccf31c1c8130ab522e 100644 (file)
--- a/src/testdir/test_vim9_script.vim
+++ b/src/testdir/test_vim9_script.vim
@@ -2533,12 +2533,12 @@ def Test_for_loop()
 enddef
 
 def Test_for_loop_fails()
-  CheckDefFailure(['for '], 'E1097:')
-  CheckDefFailure(['for x'], 'E1097:')
-  CheckDefFailure(['for x in'], 'E1097:')
-  CheckDefFailure(['for # in range(5)'], 'E690:')
-  CheckDefFailure(['for i In range(5)'], 'E690:')
-  CheckDefFailure(['var x = 5', 'for x in range(5)'], 'E1017:')
+  CheckDefAndScriptFailure2(['for '], 'E1097:', 'E690:')
+  CheckDefAndScriptFailure2(['for x'], 'E1097:', 'E690:')
+  CheckDefAndScriptFailure2(['for x in'], 'E1097:', 'E15:')
+  CheckDefAndScriptFailure(['for # in range(5)'], 'E690:')
+  CheckDefAndScriptFailure(['for i In range(5)'], 'E690:')
+  CheckDefAndScriptFailure2(['var x = 5', 'for x in range(5)', 'endfor'], 'E1017:', 'E1041:')
   CheckScriptFailure(['def Func(arg: any)', 'for arg in range(5)', 'enddef', 'defcompile'], 'E1006:')
   delfunc! g:Func
   CheckDefFailure(['for i in xxx'], 'E1001:')

diff --git a/src/version.c b/src/version.c
index 160b85f42569966f6e999a728fba57e582298723..b0d8dae3f5c2c84b14de6028b0c7a4ca90cdd36d 100644 (file)
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3113,
 /**/
     3112,
 /**/