From c0876672faa194ddd9f02c7c8b154793c2a89ad1 Mon Sep 17 00:00:00 2001
From: Joe Turgeon <arithmetric@gmail.com>
Date: Sun, 23 Oct 2016 10:54:50 -0500
Subject: [PATCH] Fixing floating point exception caused by metrics. Using
 default column width unless in a TTY.

---
 src/metrics.cpp | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/src/metrics.cpp b/src/metrics.cpp
index 32fc4ba05..8c4de496a 100644
--- a/src/metrics.cpp
+++ b/src/metrics.cpp
@@ -192,16 +192,22 @@ void ThreadShowMetricsScreen()
     while (true) {
         // Number of lines that are always displayed
         int lines = 1;
+        int cols = 80;
 
         // Get current window size
-        struct winsize w;
-        ioctl(STDOUT_FILENO, TIOCGWINSZ, &w);
+        if (isatty(STDOUT_FILENO)) {
+          struct winsize w;
+          ioctl(STDOUT_FILENO, TIOCGWINSZ, &w);
+          if (w.ws_col) {
+            cols = w.ws_col;
+          }
+        }
 
         // Erase below current position
         std::cout << "\e[J";
 
-        lines += printMetrics(w.ws_col, nStart, mining);
-        lines += printMessageBox(w.ws_col);
+        lines += printMetrics(cols, nStart, mining);
+        lines += printMessageBox(cols);
         lines += printInitMessage();
 
         // Explain how to exit