diff --git a/test/FrontendAda/negative_field_offset.adb b/test/FrontendAda/negative_field_offset.adb
new file mode 100644
index 00000000000..02e3dac23af
--- /dev/null
+++ b/test/FrontendAda/negative_field_offset.adb
@@ -0,0 +1,10 @@
+-- RUN: %llvmgcc -c %s
+with System;
+procedure Negative_Field_Offset (N : Integer) is
+   type String_Pointer is access String;
+   --  Force use of a thin pointer.
+   for String_Pointer'Size use System.Word_Size;
+   P : String_Pointer;
+begin
+   P := new String (1 .. N);
+end;