From 6adc9f90625b73f2843978f720198bbb0b8057b1 Mon Sep 17 00:00:00 2001
From: Paul Licameli <paul.licameli@audacityteam.org>
Date: Tue, 22 Aug 2017 08:38:16 -0400
Subject: [PATCH] Fix silly out of bounds mistake in Sequence consistency check

---
 src/Sequence.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/Sequence.cpp b/src/Sequence.cpp
index 1c04523fe..159d93b41 100644
--- a/src/Sequence.cpp
+++ b/src/Sequence.cpp
@@ -1810,13 +1810,13 @@ void Sequence::ConsistencyCheck
    // gives a little more discrimination
    InconsistencyException ex;
 
+   unsigned int numBlocks = mBlock.size();
+
    unsigned int i;
-   sampleCount pos = mBlock[from].start;
+   sampleCount pos = from < numBlocks ? mBlock[from].start : mNumSamples;
    if ( from == 0 && pos != 0 )
       ex = CONSTRUCT_INCONSISTENCY_EXCEPTION, bError = true;
 
-   unsigned int numBlocks = mBlock.size();
-
    for (i = from; !bError && i < numBlocks; i++) {
       const SeqBlock &seqBlock = mBlock[i];
       if (pos != seqBlock.start)