From 68e2d00f9b44465c4c9d3ce4b1e1e6dc1105f5b1 Mon Sep 17 00:00:00 2001
From: martynshaw99 <martynshaw99@47890b92-0858-11df-a26f-8b716316a5bc>
Date: Wed, 2 May 2012 21:37:45 +0000
Subject: [PATCH] Restore default behaviour if no clips found to pre-r11704
 status, whilst still get proper max and min for severely-offset waveforms.

---
 src/WaveTrack.cpp | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/WaveTrack.cpp b/src/WaveTrack.cpp
index 63939594e..4b5b32998 100644
--- a/src/WaveTrack.cpp
+++ b/src/WaveTrack.cpp
@@ -1539,7 +1539,9 @@ double WaveTrack::GetEndTime()
 bool WaveTrack::GetMinMax(float *min, float *max,
                           double t0, double t1)
 {
-   *min = FLT_MAX;
+   bool clipFound = false;
+
+   *min = FLT_MAX;   // we need these at extremes to make sure we find true min and max
    *max = -FLT_MAX;
 
    if (t0 > t1)
@@ -1556,6 +1558,7 @@ bool WaveTrack::GetMinMax(float *min, float *max,
 
       if (t1 >= clip->GetStartTime() && t0 <= clip->GetEndTime())
       {
+         clipFound = true;
          float clipmin, clipmax;
          if (it->GetData()->GetMinMax(&clipmin, &clipmax, t0, t1))
          {
@@ -1570,6 +1573,12 @@ bool WaveTrack::GetMinMax(float *min, float *max,
       }
    }
 
+   if(!clipFound)
+   {
+      *min = float(0.0);   // sensible defaults if no clips found
+      *max = float(0.0);
+   }
+
    return result;
 }