misc/cgo: move easy tests to cmd/cgo/internal

This moves most misc/cgo tests to cmd/cgo/internal. This is mostly a
trivial rename and updating dist/test.go for the new paths, plus
excluding these packages from regular dist test registration. A few
tests were sensitive to what path they ran in, so we update those.

This will let these tests access facilities in internal/testenv.

For #37486.

Change-Id: I3ed417c7c22d9b667f2767c0cb1f59118fcd4af6
Reviewed-on: https://go-review.googlesource.com/c/go/+/492720
Run-TryBot: Austin Clements <austin@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>

1 files changed, 0 insertions, 34 deletions

diff --git a/misc/cgo/errors/testdata/malloc.go b/misc/cgo/errors/testdata/malloc.go
deleted file mode 100644
index 65da0208b9..0000000000
--- a/misc/cgo/errors/testdata/malloc.go
+++ /dev/null
@@ -1,34 +0,0 @@
-// Copyright 2016 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Test that C.malloc does not return nil.
-
-package main
-
-// #include <stdlib.h>
-import "C"
-
-import (
-	"fmt"
-	"runtime"
-)
-
-func main() {
-	var size C.size_t
-	size--
-
-	// The Dragonfly libc succeeds when asked to allocate
-	// 0xffffffffffffffff bytes, so pass a different value that
-	// causes it to fail.
-	if runtime.GOOS == "dragonfly" {
-		size = C.size_t(0x7fffffff << (32 * (^uintptr(0) >> 63)))
-	}
-
-	p := C.malloc(size)
-	if p == nil {
-		fmt.Println("malloc: C.malloc returned nil")
-		// Just exit normally--the test script expects this
-		// program to crash, so exiting normally indicates failure.
-	}
-}