From 57108e1ed7fa93c7a7f1515339a8d72ff7322885 Mon Sep 17 00:00:00 2001
From: "Reece H. Dunn" <msclrhd@gmail.com>
Date: Wed, 13 Sep 2017 07:28:58 +0100
Subject: [PATCH] Add n_points guards in the LoadEnvelope2 loop.

Clang static analysis reports these as 'Result of operation is
garbage or undefined' errors.
---
 src/libespeak-ng/compiledata.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/libespeak-ng/compiledata.c b/src/libespeak-ng/compiledata.c
index f32754cf..213692b7 100644
--- a/src/libespeak-ng/compiledata.c
+++ b/src/libespeak-ng/compiledata.c
@@ -1408,10 +1408,10 @@ static int LoadEnvelope2(FILE *f, const char *fname)
 
 	ix = -1;
 	ix2 = 0;
-	for (x = 0; x < ENV_LEN; x++) {
-		if (x > env_x[ix+4])
+	if (n_points > 0) for (x = 0; x < ENV_LEN; x++) {
+		if (n_points > 3 && x > env_x[ix+4])
 			ix++;
-		if (x >= env_x[ix2+1])
+		if (n_points > 2 && x >= env_x[ix2+1])
 			ix2++;
 
 		if (env_lin[ix2] > 0) {