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codebude · May 7, 2024 · cd06130 · cd06130
1 parent e08d6e3
commit cd06130
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/QRCoder/QRCodeGenerator.cs b/QRCoder/QRCodeGenerator.cs
@@ -751,12 +751,13 @@ bool IsUtf8()
         /// </summary>
         private static bool IsValidISO(string input)
         {
+            // No heap allocations if the string is ISO-8859-1
             try
             {
                 _ = _iso88591ExceptionFallback.GetByteCount(input);
                 return true;
             }
-            catch (EncoderFallbackException)
+            catch (EncoderFallbackException) // The exception is a heap allocation and not ideal
             {
                 return false;
             }