commit 7aca5ca6763e50d2c23953b20e30fca7457c9abf
author Bram Moolenaar <Bram@vim.org> Mon Feb 07 19:56:43 2022 +0000
committer Bram Moolenaar <Bram@vim.org> Mon Feb 07 19:56:43 2022 +0000
tree a0a1e5077975c095e06f37b668baff7f68a92230
parent 92368aad613bca700877ccb1725e1cb5a80dd34a

patch 8.2.4322: Vim9: crash when using funcref with closure

Problem:    Vim9: crash when using funcref with closure.
Solution:   Keep a reference to the funcref that has the outer context.
            (closes #9716)

src/evalfunc.c

diff --git a/src/evalfunc.c b/src/evalfunc.c
index eb12e75..b031369 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -4456,7 +4456,10 @@
 		}
 
 		if (arg_pt != NULL)
-		    pt->pt_outer = arg_pt->pt_outer;
+		{
+		    pt->pt_outer_partial = arg_pt;
+		    ++arg_pt->pt_refcount;
+		}
 	    }
 	    rettv->v_type = VAR_PARTIAL;
 	    rettv->vval.v_partial = pt;