runtime: handle "sys: trap: divide error" note on Plan 9

Fixes #7286.

LGTM=rsc
R=rsc
CC=golang-codereviews
https://golang.org/cl/61410044

diff --git a/src/pkg/runtime/signals_plan9.h b/src/pkg/runtime/signals_plan9.h
index f9bec65fcbe48e5ea4b865e7da3ca7ecf1e03449..b16ecafd102555088bcb4a05576080526dc934b8 100644 (file)
--- a/src/pkg/runtime/signals_plan9.h
+++ b/src/pkg/runtime/signals_plan9.h
@@ -18,6 +18,7 @@ SigTab runtime·sigtab[] = {
        // exception.
        P, "sys: trap: fault read addr",
        P, "sys: trap: fault write addr",
+       P, "sys: trap: divide error",
        T, "sys: trap:",
 
        N, "sys: bad sys call",