# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1597347905 -7200
# Node ID 837e6a429950e6d4eb6ab657e01379306bdc694d
# Parent  97b64b16fd66cd49ddb08c537cfe625ade3ce54e
patch 8.2.1443: Vim9: crash when interrupting a nested :def function

Commit: https://github.com/vim/vim/commit/cdd70f09a5340c3d7ae873f1aaaf9847f27410cc
Author: Bram Moolenaar <Bram@vim.org>
Date:   Thu Aug 13 21:40:18 2020 +0200

    patch 8.2.1443: Vim9: crash when interrupting a nested :def function

    Problem:    Vim9: crash when interrupting a nested :def function.
    Solution:   Push a dummy return value onto the stack. (closes https://github.com/vim/vim/issues/6701)

diff --git a/src/version.c b/src/version.c
--- 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 */
 /**/
+    1443,
+/**/
     1442,
 /**/
     1441,
diff --git a/src/vim9execute.c b/src/vim9execute.c
--- a/src/vim9execute.c
+++ b/src/vim9execute.c
@@ -915,16 +915,17 @@ call_def_function(
 	    }
 	    else
 	    {
-		// not inside try or need to return from current functions.
+		// Not inside try or need to return from current functions.
+		// Push a dummy return value.
+		if (GA_GROW(&ectx.ec_stack, 1) == FAIL)
+		    goto failed;
+		tv = STACK_TV_BOT(0);
+		tv->v_type = VAR_NUMBER;
+		tv->vval.v_number = 0;
+		++ectx.ec_stack.ga_len;
 		if (ectx.ec_frame_idx == initial_frame_idx)
 		{
-		    // At the toplevel we are done.  Push a dummy return value.
-		    if (GA_GROW(&ectx.ec_stack, 1) == FAIL)
-			goto failed;
-		    tv = STACK_TV_BOT(0);
-		    tv->v_type = VAR_NUMBER;
-		    tv->vval.v_number = 0;
-		    ++ectx.ec_stack.ga_len;
+		    // At the toplevel we are done.
 		    need_rethrow = TRUE;
 		    if (handle_closure_in_use(&ectx, FALSE) == FAIL)
 			goto failed;