gc: better error message when ~ operator is found

Fixes #844.

R=ken2, rsc, ken3
CC=golang-dev
https://golang.org/cl/1593041

diff --git a/src/cmd/gc/go.y b/src/cmd/gc/go.y
index 5aac463c8cfd6382dfbb7dcd589a0667990d873d..c7a1f111bcc837875f1daa0dd0daba698c09fddc 100644 (file)
--- a/src/cmd/gc/go.y
+++ b/src/cmd/gc/go.y
@@ -753,7 +753,7 @@ uexpr:
        }
 |      '~' uexpr
        {
-               yyerror("the OCOM operator is ^");
+               yyerror("the bitwise complement operator is ^");
                $$ = nod(OCOM, $2, N);
        }
 |      '^' uexpr