cmd/doc: don't log on constraint type elements

Fixes #50256

Change-Id: I2327a0b28f8173c801ed2946bec8083967667027
Reviewed-on: https://go-review.googlesource.com/c/go/+/373314
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/src/cmd/doc/testdata/pkg.go b/src/cmd/doc/testdata/pkg.go
index 5ece832565..a693c74918 100644
--- a/src/cmd/doc/testdata/pkg.go
+++ b/src/cmd/doc/testdata/pkg.go
@@ -238,3 +238,15 @@ type ExportedFormattedType struct {
 	// Text after pre-formatted block.
 	ExportedField int
 }
+
+type SimpleConstraint interface {
+	~int | ~float64
+}
+
+type TildeConstraint interface {
+	~int
+}
+
+type StructConstraint interface {
+	struct { F int }
+}