From 29b508a894f565afbfdb4f170fe0bce80525bd58 Mon Sep 17 00:00:00 2001
From: Maxime Coste <frrrwww@gmail.com>
Date: Mon, 7 Sep 2015 23:29:01 +0100
Subject: Avoid wrapping lines with negative max width

---
 src/string.cc | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/string.cc')

diff --git a/src/string.cc b/src/string.cc
index 682a6947..45264898 100644
--- a/src/string.cc
+++ b/src/string.cc
@@ -218,6 +218,9 @@ String expand_tabs(StringView line, CharCount tabstop, CharCount col)
 
 Vector<StringView> wrap_lines(StringView text, CharCount max_width)
 {
+    if (max_width <= 0)
+        throw runtime_error("Invalid max width");
+
     using Utf8It = utf8::iterator<const char*>;
     Utf8It word_begin{text.begin()};
     Utf8It word_end{word_begin};
-- 
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