From: Mikko Rasa <tdb@tdb.fi>
Date: Sat, 3 Apr 2021 19:58:51 +0000 (+0300)
Subject: Guard against hitting the end of the array in get_gl_type
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=commitdiff_plain;h=26634147dfbb5be9a4046a0d50b3b1d6857ad68d

Guard against hitting the end of the array in get_gl_type
---

diff --git a/source/core/datatype.cpp b/source/core/datatype.cpp
index af7446eb..4dd0b89f 100644
--- a/source/core/datatype.cpp
+++ b/source/core/datatype.cpp
@@ -88,8 +88,9 @@ namespace GL {
 
 GLenum get_gl_type(DataType type)
 {
-	const MappedType *ptr = lower_bound(type_map, type_map+type_map_size, type, type_compare);
-	if(ptr->type!=type)
+	const MappedType *end = type_map+type_map_size;
+	const MappedType *ptr = lower_bound(type_map, end, type, type_compare);
+	if(ptr==end || ptr->type!=type)
 		throw invalid_argument("get_gl_type");
 	return ptr->gl_type;
 }