cmd/compile: rename init function from init.ializers back to init

The name change init -> init.ializers was initially required for
initialization code.

With CL 161337 there's no wrapper code any more, there's a data
structure instead (named .inittask). So we can go back to just
plain init appearing in tracebacks.

RELNOTE=yes

Update #29919. Followon to CL 161337.

Change-Id: I5a4a49d286df24b53b2baa193dfda482f3ea82a5
Reviewed-on: https://go-review.googlesource.com/c/go/+/167780
Run-TryBot: Keith Randall <[email protected]>
Reviewed-by: Josh Bleecher Snyder <[email protected]>
TryBot-Result: Gobot Gobot <[email protected]>

src/cmd/compile/internal/gc/init.go

@@ -46,7 +46,7 @@ func fninit(n []*Node) {
  // Make a function that contains all the initialization statements.
  if len(nf) > 0 {
  lineno = nf[0].Pos // prolog/epilog gets line number of first init stmt
- initializers := lookup("init.ializers")
+ initializers := lookup("init")
  disableExport(initializers)
  fn := dclfunc(initializers, nod(OTFUNC, nil, nil))
  for _, dcl := range dummyInitFn.Func.Dcl {

src/fmt/errors_test.go

@@ -157,7 +157,7 @@ func TestErrorFormatter(t *testing.T) {
  want: "fallback:" +
  "\n somefile.go:123" +
  "\n - file does not exist:" +
- "\n os.init.ializers" +
+ "\n os.init" +
  "\n .+/os/error.go:\\d\\d",
  regexp: true,
  }, {

test/fixedbugs/issue29919.dir/a.go

@@ -34,8 +34,8 @@ func f() int {
  if !strings.Contains(s, "a.go:19") {
  panic("missing a.go:19")
  }
- if !strings.Contains(s, "a.init.ializers") {
- panic("missing a.init.ializers")
+ if !strings.Contains(s, "a.init") {
+ panic("missing a.init")
  }
 
  // Check the CallersFrames results.
@@ -58,11 +58,11 @@ func f() int {
  panic("traceback truncated after f")
  }
  f, more = iter.Next()
- if f.Function != "a.init.ializers" || !strings.HasSuffix(f.File, "a.go") || f.Line != 15 {
- panic(fmt.Sprintf("bad init.ializers %v\n", f))
+ if f.Function != "a.init" || !strings.HasSuffix(f.File, "a.go") || f.Line != 15 {
+ panic(fmt.Sprintf("bad init %v\n", f))
  }
  if !more {
- panic("traceback truncated after init.ializers")
+ panic("traceback truncated after init")
  }
  f, _ = iter.Next()
  if !strings.HasPrefix(f.Function, "runtime.") {