commit 2ea79ad83584f5d668adfb935be67ee0e0e9995b
author Bram Moolenaar <Bram@vim.org> Sun Oct 18 23:32:13 2020 +0200
committer Bram Moolenaar <Bram@vim.org> Sun Oct 18 23:32:13 2020 +0200
tree d4b994fc48309cfb9bfafd0169a46ac39e36ea3d
parent a2c026d0fd470d68d679616fddfc285cb4834412

patch 8.2.1862: vim9: memory leak when compiling lambda fails

Problem:    vim9: memory leak when compiling lambda fails.
Solution:   Call clear_evalarg().

src/version.c

diff --git a/src/version.c b/src/version.c
index 5a53443..2e6bb98 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1862,
+/**/
     1861,
 /**/
     1860,

src/vim9compile.c

diff --git a/src/vim9compile.c b/src/vim9compile.c
index edfa325..55368d1 100644
--- a/src/vim9compile.c
+++ b/src/vim9compile.c
@@ -2692,7 +2692,10 @@
 
     // Get the funcref in "rettv".
     if (get_lambda_tv(arg, &rettv, &evalarg) != OK)
+    {
+	clear_evalarg(&evalarg, NULL);
 	return FAIL;
+    }
 
     ufunc = rettv.vval.v_partial->pt_func;
     ++ufunc->uf_refcount;