diff --git a/testdata/parser/negative/1.txt b/testdata/parser/negative/1.txt
new file mode 100644
index 0000000000000000000000000000000000000000..c058a7760693fbb6d6d4dc63b4f34c4b8de76e8c
--- /dev/null
+++ b/testdata/parser/negative/1.txt
@@ -0,0 +1,3 @@
+Parse error at 1.pdl:7:4: Illegal nested synchronous statement
+			synchronous {}
+			^