From 626cf63965986ab90bdca50066ffb8402126fb04 Mon Sep 17 00:00:00 2001
From: Toni Wilen <twilen@winuae.net>
Date: Sun, 19 Nov 2017 17:00:41 +0200
Subject: [PATCH] Dynamically increase log buffer size when needed.

---
 od-win32/writelog.cpp | 33 +++++++++++++++++++++++++++++++--
 1 file changed, 31 insertions(+), 2 deletions(-)

diff --git a/od-win32/writelog.cpp b/od-win32/writelog.cpp
index a6b679cb..4cb003d6 100644
--- a/od-win32/writelog.cpp
+++ b/od-win32/writelog.cpp
@@ -352,15 +352,44 @@ static void console_put (const TCHAR *buffer)
 	}
 }
 
+static int console_buf_len = 100000;
+
 void console_out_f (const TCHAR *format,...)
 {
+	int len;
 	va_list parms;
+	TCHAR *pbuf;
 	TCHAR buffer[WRITE_LOG_BUF_SIZE];
+	TCHAR *bigbuf = NULL;
 
+	pbuf = buffer;
 	va_start (parms, format);
-	_vsntprintf (buffer, WRITE_LOG_BUF_SIZE - 1, format, parms);
+	len = _vsntprintf (pbuf, WRITE_LOG_BUF_SIZE - 1, format, parms);
+	if (!len)
+		return;
+	if (len < 0 || len >= WRITE_LOG_BUF_SIZE - 2) {
+		int buflen = console_buf_len;
+		for (;;) {
+			bigbuf = xmalloc(TCHAR, buflen);
+			if (!bigbuf)
+				return;
+			len = _vsntprintf(bigbuf, buflen - 1, format, parms);
+			if (!len)
+				return;
+			if (len > 0 && len < buflen - 2)
+				break;
+			xfree(bigbuf);
+			buflen += 100000;
+			if (buflen > 10000000)
+				return;
+		}
+		pbuf = bigbuf;
+		console_buf_len = buflen;
+	}
 	va_end (parms);
-	console_put (buffer);
+	console_put (pbuf);
+	if (bigbuf)
+		xfree(bigbuf);
 }
 void console_out (const TCHAR *txt)
 {
-- 
2.47.3