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-rw-r--r--src/eval.c2
-rw-r--r--src/testdir/test_fold.vim9
-rw-r--r--src/version.c2
3 files changed, 12 insertions, 1 deletions
diff --git a/src/eval.c b/src/eval.c
index 19ab01561d..a9f7112f2d 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -968,7 +968,7 @@ eval_foldexpr(win_T *wp, int *cp)
// If the result is a string, check if there is a non-digit before
// the number.
s = tv.vval.v_string;
- if (!VIM_ISDIGIT(*s) && *s != '-')
+ if (*s != NUL && !VIM_ISDIGIT(*s) && *s != '-')
*cp = *s++;
retval = atol((char *)s);
}
diff --git a/src/testdir/test_fold.vim b/src/testdir/test_fold.vim
index 398a0c2d71..cb29d43d54 100644
--- a/src/testdir/test_fold.vim
+++ b/src/testdir/test_fold.vim
@@ -1769,4 +1769,13 @@ func Test_foldcolumn_linebreak_control_char()
bwipe!
endfunc
+" This used to cause invalid memory access
+func Test_foldexpr_return_empty_string()
+ new
+ setlocal foldexpr='' foldmethod=expr
+ redraw
+
+ bwipe!
+endfunc
+
" vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/version.c b/src/version.c
index 057cae580a..ce13dcc776 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@ static char *(features[]) =
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
+ 1995,
+/**/
1994,
/**/
1993,