Commit: patch 9.2.0136: memory leak in add_interface_from_super_class()

[Christian Brabandt]

patch 9.2.0136: memory leak in add_interface_from_super_class()

Commit: https://github.com/vim/vim/commit/93a7855f01b61fafd2063481252ece7cb6fe6b0c
Author: Huihui Huang <625...@qq.com>
Date: Tue Mar 10 19:56:08 2026 +0000

patch 9.2.0136: memory leak in add_interface_from_super_class()

Problem: memory leak in add_interface_from_super_class() in
src/vim9class.c
Solution: Free variable intf_name in the error case, decrement the
impl_gap grow array (Huihui Huang).

closes: #19629

Signed-off-by: Huihui Huang <625...@qq.com>
Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/src/version.c b/src/version.c
index cfe11e4c0..e58c12baa 100644
--- a/src/version.c
+++ b/src/version.c
@@ -734,6 +734,8 @@ static char *(features[]) =

static int included_patches[] =
{ /* Add new patch number below this line */
+/**/
+ 136,
/**/
135,
/**/
diff --git a/src/vim9class.c b/src/vim9class.c
index 2148f0ffb..11696b72b 100644
--- a/src/vim9class.c
+++ b/src/vim9class.c
@@ -918,7 +918,7 @@ add_interface_from_super_class(
return FALSE;

if (ga_grow(impl_gap, 1) == FAIL)
- return FALSE;
+ goto fail;

char_u **intf_names = (char_u **)impl_gap->ga_data;
intf_names[impl_gap->ga_len] = intf_name;
@@ -926,7 +926,10 @@ add_interface_from_super_class(

// Add the interface class to "intf_classes_gap"
if (ga_grow(intf_classes_gap, 1) == FAIL)
- return FALSE;
+ {
+ --impl_gap->ga_len;
+ goto fail;
+ }

class_T **intf_classes = (class_T **)intf_classes_gap->ga_data;
intf_classes[intf_classes_gap->ga_len] = ifcl;
@@ -934,6 +937,9 @@ add_interface_from_super_class(
++ifcl->class_refcount;

return TRUE;
+fail:
+ vim_free(intf_name);
+ return FALSE;
}

/*