From 10600db772a6b50093b8027509d7089c209d1e26 Mon Sep 17 00:00:00 2001 From: Bram Moolenaar Date: Wed, 5 Dec 2018 19:46:07 +0100 Subject: patch 8.1.0565: asan complains about reading before allocated block Problem: Asan complains about reading before allocated block. Solution: Workaround: Avoid offset from becoming negative. --- src/gui.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'src/gui.c') diff --git a/src/gui.c b/src/gui.c index 6154b48de..b961108ed 100644 --- a/src/gui.c +++ b/src/gui.c @@ -2753,7 +2753,8 @@ gui_redraw_block( } else if (enc_utf8) { - if (ScreenLines[off + col1] == 0) + // FIXME: how can the first character ever be zero? + if (col1 > 0 && ScreenLines[off + col1] == 0) --col1; # ifdef FEAT_GUI_GTK if (col2 + 1 < Columns && ScreenLines[off + col2 + 1] == 0) -- cgit v1.2.1