CL 196959 uses %v to print *EscLocation values. This happens at least at
Fatalf("path inconsistency: %v != %v", edge.src, src)
in (*Escape).explainPath.
Change-Id: I1c761406af6a1025403dfefa5ec40aee75e72944
Reviewed-on: https://go-review.googlesource.com/c/go/+/205377
Run-TryBot: Ian Lance Taylor <iant@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>