From c2fda8f3e4f3623d1766d37078fb05d3ef6dbbe8 Mon Sep 17 00:00:00 2001
From: Mans Rullgard <mans@mansr.com>
Date: Mon, 24 Aug 2020 19:25:39 +0100
Subject: [PATCH] wav: warn when writing truncated size fields in large files

---
 src/wav.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/wav.c b/src/wav.c
index 8cd87b86..bf7d2714 100644
--- a/src/wav.c
+++ b/src/wav.c
@@ -1468,6 +1468,10 @@ static int wavwritehdr(sox_format_t * ft, int second_header)
         lsx_debug("        %d byte/sec, %d block align, %d bits/samp",
                 dwAvgBytesPerSec, wBlockAlign, wBitsPerSample);
     } else {
+        if (wRiffLength == UINT32_MAX || dwDataLength == UINT32_MAX ||
+            dwSamplesWritten == UINT32_MAX)
+            lsx_warn("File too large, writing truncated values in header");
+
         lsx_debug("Finished writing Wave file, %"PRIu64" data bytes %"PRIu64" samples",
                   dwDataLength, wav->numSamples);
 #ifdef HAVE_GSM
-- 
2.11.4.GIT