patch 8.0.0561: undefined behavior when using backslash after empty line
Problem: Undefined behavior when using backslash after empty line.
Solution: Check for an empty line. (Dominique Pelle, closes #1631)
diff --git a/src/misc2.c b/src/misc2.c
index 2f9fed5..fa06e47 100644
--- a/src/misc2.c
+++ b/src/misc2.c
@@ -2129,7 +2129,7 @@
{
int len;
- if (s == NULL)
+ if (s == NULL || *s == NUL)
return;
len = (int)STRLEN(s);
if (ga_grow(gap, len) == OK)
diff --git a/src/testdir/test_vimscript.vim b/src/testdir/test_vimscript.vim
index a299581..ce28e82 100644
--- a/src/testdir/test_vimscript.vim
+++ b/src/testdir/test_vimscript.vim
@@ -1310,6 +1310,17 @@
endfunc
"-------------------------------------------------------------------------------
+" Test 96: line continuation {{{1
+"
+" Undefined behavior was detected by ubsan with line continuation
+" after an empty line.
+"-------------------------------------------------------------------------------
+func Test_script_emty_line_continuation()
+
+ \
+endfunc
+
+"-------------------------------------------------------------------------------
" Modelines {{{1
" vim: ts=8 sw=4 tw=80 fdm=marker
" vim: fdt=substitute(substitute(foldtext(),\ '\\%(^+--\\)\\@<=\\(\\s*\\)\\(.\\{-}\\)\:\ \\%(\"\ \\)\\=\\(Test\ \\d*\\)\:\\s*',\ '\\3\ (\\2)\:\ \\1',\ \"\"),\ '\\(Test\\s*\\)\\(\\d\\)\\D\\@=',\ '\\1\ \\2',\ "")
diff --git a/src/version.c b/src/version.c
index 325be55..91ef1f3 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
+ 561,
+/**/
560,
/**/
559,