From f4906bf100acb8c5875196b7c2306effdd6a091d Mon Sep 17 00:00:00 2001
From: "Steinar H. Gunderson" <sgunderson@bigfoot.com>
Date: Fri, 28 Apr 2006 11:47:35 +0000
Subject: [PATCH] Fix a possible segfault.

---
 Makefile  | 2 +-
 pitch.cpp | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index b7cc597..5cbb2cc 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-CXXFLAGS=-O2 -Wall
+CXXFLAGS=-g -Wall
 CPPFLAGS=
 
 all: pitch
diff --git a/pitch.cpp b/pitch.cpp
index 1c272f1..97238f5 100644
--- a/pitch.cpp
+++ b/pitch.cpp
@@ -234,6 +234,9 @@ std::pair<double, double> find_peak(double *in, unsigned num_samples)
 		}
 	}
 
+	if (best_bin == 0 || best_bin == num_samples / 2) {
+		return std::make_pair(-1.0, 0.0);
+	}
 	std::pair<double, double> peak = 
 		interpolate_peak(in[best_bin - 1],
 				 in[best_bin],
-- 
2.39.2