diff --git a/lib/gdtoa b/lib/gdtoa
index 0c6ab693..1a6d16f1 160000
--- a/lib/gdtoa
+++ b/lib/gdtoa
@@ -1 +1 @@
-Subproject commit 0c6ab693a3afcc316a43b685af50b19abe01b861
+Subproject commit 1a6d16f13a017c014c8f1f2dacd1a56f74b820b5