added checks for ArgumentOutOfRangeException

zaafar · mellinoe · commit 5aae99ed9ad3 · 2020-12-31T00:31:19.000-08:00
diff --git a/src/ImGui.NET/Util.cs b/src/ImGui.NET/Util.cs
@@ -58,6 +58,11 @@ internal static int GetUtf8(string s, byte* utf8Bytes, int utf8ByteCount)
 
         internal static int GetUtf8(string s, int start, int length, byte* utf8Bytes, int utf8ByteCount)
         {
+            if (start > s.Length - 1 || length > s.Length || start + length > s.Length)
+            {
+                throw new ArgumentOutOfRangeException();
+            }
+
             fixed (char* utf16Ptr = s)
             {
                 return Encoding.UTF8.GetBytes(utf16Ptr + start, length, utf8Bytes, utf8ByteCount);

Original file line number	Diff line number	Diff line change
`@@ -58,6 +58,11 @@ internal static int GetUtf8(string s, byte* utf8Bytes, int utf8ByteCount)`
`58`	`58`
`59`	`59`	`internal static int GetUtf8(string s, int start, int length, byte* utf8Bytes, int utf8ByteCount)`
`60`	`60`	`{`
	`61`	`+ if (start > s.Length - 1 \|\| length > s.Length \|\| start + length > s.Length)`
	`62`	`+ {`
	`63`	`+ throw new ArgumentOutOfRangeException();`
	`64`	`+ }`
	`65`	`+`
`61`	`66`	`fixed (char* utf16Ptr = s)`
`62`	`67`	`{`
`63`	`68`	`return Encoding.UTF8.GetBytes(utf16Ptr + start, length, utf8Bytes, utf8ByteCount);`