commit cf070112ca2a6ac9ec5466be1cdc667f6abe8fd0
author Bram Moolenaar <Bram@vim.org> Mon Jun 29 23:02:21 2020 +0200
committer Bram Moolenaar <Bram@vim.org> Mon Jun 29 23:02:21 2020 +0200
tree 241db85e804fce8aee0ba8c749a8cd472d65d232
parent d034220c54c63daaa2841e97b653842a47f5e90e

patch 8.2.1092: not checking if saving for undo succeeds

Problem:    Not checking if saving for undo succeeds.
Solution:   Bail out if u_savesub() returns FAIL.

src/textprop.c

diff --git a/src/textprop.c b/src/textprop.c
index 2145db2..0645e1f 100644
--- a/src/textprop.c
+++ b/src/textprop.c
@@ -1350,8 +1350,9 @@
 	if (res.dirty)
 	{
 	    // Save for undo if requested and not done yet.
-	    if ((flags & APC_SAVE_FOR_UNDO) && !dirty)
-		u_savesub(lnum);
+	    if ((flags & APC_SAVE_FOR_UNDO) && !dirty
+						    && u_savesub(lnum) == FAIL)
+		return FALSE;
 	    dirty = TRUE;
 	}
 	if (res.can_drop)