From: Christian Brabandt <cb@256bit.org>
Date: Thu, 2 Jul 2026 19:36:42 +0000 (+0000)
Subject: patch 9.2.0772: Vim9: Null dereference inside alloc_type()
X-Git-Tag: v9.2.0772^0
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=d5ec9f2e2c8694f12ba16eef1ce0fe002445bd37;p=thirdparty%2Fvim.git

patch 9.2.0772: Vim9: Null dereference inside alloc_type()

Problem:  Vim9: Null dereference inside alloc_type(),
          Missing NULL check after ALLOC_ONE() (Ao Xijie)
Solution: Check that the returned value from ALLOC_ONE() is not NULL

related: #20668

Supported by AI.

Signed-off-by: Christian Brabandt <cb@256bit.org>
---

diff --git a/src/version.c b/src/version.c
index 7fa823e7dc..2c4e9cf24c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -759,6 +759,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    772,
 /**/
     771,
 /**/
diff --git a/src/vim9type.c b/src/vim9type.c
index 1bd94a60cb..ab34d2535c 100644
--- a/src/vim9type.c
+++ b/src/vim9type.c
@@ -147,6 +147,8 @@ alloc_type(type_T *type)
 	return type;
 
     ret = ALLOC_ONE(type_T);
+    if (ret == NULL)
+	return NULL;
     *ret = *type;
 
     if (ret->tt_member != NULL)