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test: add a test for gccgo compiler bug of missing type descriptor

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The gccgo compiler did not generate type descriptor for a pointer
to a type alias defined in another package, causing linking error.
The fix is CL 210787. This CL adds a test.

Updates #36085.

Change-Id: I3237c7fedb4d92fb2dc610ee2b88087f96dc2a1a
Reviewed-on: https://go-review.googlesource.com/c/go/+/210858
Run-TryBot: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Cherry Zhang 2019-12-11 11:44:08 -05:00
parent 9d78e75a0a
commit 6f2b8347b1
3 changed files with 22 additions and 0 deletions
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3
test/fixedbugs/issue36085.dir/a.go Normal file
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package a
type W = map[int32]interface{}

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test/fixedbugs/issue36085.dir/b.go Normal file
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package main
import "a"
var w a.W
var X interface{} = &w
func main() {}

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test/fixedbugs/issue36085.go Normal file
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// compiledir
// Copyright 2019 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.
// Issue 36085: gccgo compiler did not generate type descriptor
// for pointer to type alias defined in another package, causing
// linking error.
package ignored