Commit: patch 9.1.1041: Vim9: out-of-bound access when echoing an enum

[Christian Brabandt]

patch 9.1.1041: Vim9: out-of-bound access when echoing an enum

Commit: https://github.com/vim/vim/commit/cb848b687f9b6ec7b1c3d903d3ff84fc1f52d8e3
Author: Yegappan Lakshmanan <yega...@yahoo.com>
Date: Mon Jan 20 21:38:09 2025 +0100

patch 9.1.1041: Vim9: out-of-bound access when echoing an enum

Problem: Vim9: out-of-bound access when echoing an enum
Solution: Add NUL to growarray, check that ufunc is non-null
before accessing it to make Coverity happy
(Yegappan Lakshmanan)

closes: #16488

Signed-off-by: Yegappan Lakshmanan <yega...@yahoo.com>
Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/src/testdir/test_vim9_enum.vim b/src/testdir/test_vim9_enum.vim
index 74eb46880..de26259d4 100644
--- a/src/testdir/test_vim9_enum.vim
+++ b/src/testdir/test_vim9_enum.vim
@@ -1586,4 +1586,19 @@ def Test_lambda_block_in_enum()
v9.CheckScriptSuccess(lines)
enddef

+" Echo an enum
+def Test_enum_echo()
+ var lines =<< trim END
+ vim9script
+ enum Demo
+ one('tahi'),
+ two('rua'),
+ three('toru')
+ var alias: string
+ endenum
+ assert_equal('enum Demo.one {name: one, ordinal: 0, alias: tahi}', execute('echo Demo.one')->split("
")[0])
+ END
+ v9.CheckScriptSuccess(lines)
+enddef
+
" vim: ts=8 sw=2 sts=2 expandtab tw=80 fdm=marker
diff --git a/src/version.c b/src/version.c
index 8e5315957..5b3683ddd 100644
--- a/src/version.c
+++ b/src/version.c
@@ -704,6 +704,8 @@ static char *(features[]) =

static int included_patches[] =
{ /* Add new patch number below this line */
+/**/
+ 1041,
/**/
1040,
/**/
diff --git a/src/vim9class.c b/src/vim9class.c
index c3ccf0250..e847bf086 100644
--- a/src/vim9class.c
+++ b/src/vim9class.c
@@ -4054,6 +4054,7 @@ object2string(
vim_free(ga.ga_data);
return NULL;
}
+ ga_append(&ga, NUL);
return (char_u *)ga.ga_data;
}

diff --git a/src/vim9expr.c b/src/vim9expr.c
index 7b8c96adb..b76544869 100644
--- a/src/vim9expr.c
+++ b/src/vim9expr.c
@@ -406,7 +406,7 @@ compile_class_object_index(cctx_T *cctx, char_u **arg, type_T *type)
}
}

- if (is_super && IS_ABSTRACT_METHOD(ufunc))
+ if (is_super && ufunc != NULL && IS_ABSTRACT_METHOD(ufunc))
{
// Trying to invoke an abstract method in a super class is not
// allowed.