[WIP] Partial bot skeleton, non-functional though

vendor/github.com/cockroachdb/pebble/internal/rawalloc/rawalloc_go1.9.go

@@ -0,0 +1,28 @@
+// Copyright 2018 The Cockroach Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License.
+
+//go:build gc && go1.9
+// +build gc,go1.9
+
+package rawalloc
+
+import "unsafe"
+
+// The go:linkname directives provides backdoor access to private functions in
+// the runtime. Below we're accessing the mallocgc function. Note that this
+// access is necessarily tied to a specific Go release which is why this file
+// is protected by a build tag.
+
+//go:linkname mallocgc runtime.mallocgc
+func mallocgc(size uintptr, typ unsafe.Pointer, needzero bool) unsafe.Pointer