[dev.typeparams] cmd/compile/internal/types2: adjust init cycle error…

… message for compiler

Enabled some more test/fixedbugs tests.

Change-Id: I02102b698eedfbee582b3234850fb01418ebbf7c
Reviewed-on: https://go-review.googlesource.com/c/go/+/276453
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>

src/cmd/compile/internal/types2/initorder.go

@@ -151,7 +151,11 @@ func findPath(objMap map[Object]*declInfo, from, to Object, seen map[Object]bool
 // reportCycle reports an error for the given cycle.
 func (check *Checker) reportCycle(cycle []Object) {
 	obj := cycle[0]
-	check.errorf(obj, "initialization cycle for %s", obj.Name())
+	if check.conf.CompilerErrorMessages {
+		check.errorf(obj, "initialization loop for %s", obj.Name())
+	} else {
+		check.errorf(obj, "initialization cycle for %s", obj.Name())
+	}
 	// subtle loop: print cycle[i] for i = 0, n-1, n-2, ... 1 for len(cycle) = n
 	for i := len(cycle) - 1; i >= 0; i-- {
 		check.errorf(obj, "\t%s refers to", obj.Name()) // secondary error, \t indented

test/run.go

@@ -2089,32 +2089,6 @@ var excluded = map[string]bool{
 	"fixedbugs/issue6403.go":   true,
 	"fixedbugs/issue6500.go":   true,
 	"fixedbugs/issue6572.go":   true,
-	"fixedbugs/issue6703a.go":  true,
-	"fixedbugs/issue6703b.go":  true,
-	"fixedbugs/issue6703c.go":  true,
-	"fixedbugs/issue6703d.go":  true,
-	"fixedbugs/issue6703e.go":  true,
-	"fixedbugs/issue6703f.go":  true,
-	"fixedbugs/issue6703g.go":  true,
-	"fixedbugs/issue6703h.go":  true,
-	"fixedbugs/issue6703i.go":  true,
-	"fixedbugs/issue6703j.go":  true,
-	"fixedbugs/issue6703k.go":  true,
-	"fixedbugs/issue6703l.go":  true,
-	"fixedbugs/issue6703m.go":  true,
-	"fixedbugs/issue6703n.go":  true,
-	"fixedbugs/issue6703o.go":  true,
-	"fixedbugs/issue6703p.go":  true,
-	"fixedbugs/issue6703q.go":  true,
-	"fixedbugs/issue6703r.go":  true,
-	"fixedbugs/issue6703s.go":  true,
-	"fixedbugs/issue6703t.go":  true,
-	"fixedbugs/issue6703u.go":  true,
-	"fixedbugs/issue6703v.go":  true,
-	"fixedbugs/issue6703w.go":  true,
-	"fixedbugs/issue6703x.go":  true,
-	"fixedbugs/issue6703y.go":  true,
-	"fixedbugs/issue6703z.go":  true,
 	"fixedbugs/issue6889.go":   true, // types2 can handle this without constant overflow
 	"fixedbugs/issue7525.go":   true, // init cycle error on different line - ok otherwise
 	"fixedbugs/issue7525b.go":  true, // init cycle error on different line - ok otherwise

test/typecheckloop.go

@@ -9,6 +9,6 @@
 
 package main
 
-const A = 1 + B // ERROR "constant definition loop\n.*A uses B\n.*B uses C\n.*C uses A|initialization cycle"
-const B = C - 1 // ERROR "constant definition loop\n.*B uses C\n.*C uses B|initialization cycle"
+const A = 1 + B // ERROR "constant definition loop\n.*A uses B\n.*B uses C\n.*C uses A|initialization loop"
+const B = C - 1 // ERROR "constant definition loop\n.*B uses C\n.*C uses B|initialization loop"
 const C = A + B + 1