diff --git a/src/cmd/api/testdata/src/pkg/issue79145/golden.txt b/src/cmd/api/testdata/src/pkg/issue79145/golden.txt
new file mode 100644
index 0000000000..adb818ae0e
--- /dev/null
+++ b/src/cmd/api/testdata/src/pkg/issue79145/golden.txt
@@ -0,0 +1,5 @@
+pkg issue79145, const Tau //deprecated
+pkg issue79145, const Tau = 6.28319  // 314159265358979323846264338327950288419716939937510582097494459/50000000000000000000000000000000000000000000000000000000000000
+pkg issue79145, const Tau ideal-float
+pkg issue79145, const Old = true
+pkg issue79145, const Old ideal-bool
diff --git a/src/cmd/api/testdata/src/pkg/issue79145/issue79145.go b/src/cmd/api/testdata/src/pkg/issue79145/issue79145.go
new file mode 100644
index 0000000000..bf6e5386e2
--- /dev/null
+++ b/src/cmd/api/testdata/src/pkg/issue79145/issue79145.go
@@ -0,0 +1,14 @@
+package issue79145
+
+// Tau is the constant τ, which equals to 6.283185... or 2π. Tau is not
+// Deprecated: please find more information at https://oeis.org/A019692.
+const Tau = 2 * pi
+
+const pi = 3.14159265358979323846264338327950288419716939937510582097494459 // https://oeis.org/A000796; like math.Pi
+
+/*
+Old is something old.
+
+Deprecated: Use New instead.
+*/
+const Old = true