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go/test/fixedbugs/issue29264.go
Robert Griesemer 99e4ddd053 cmd/compile: increase nesting depth limit for type descriptors
The formatting routines for types use a depth limit as primitive
mechanism to detect cycles. For now, increase the limit from 100
to 250 and file #29312 so we don't drop this on the floor.

Also, adjust some fatal error messages elsewhere to use
better formatting.

Fixes #29264.
Updates #29312.

Change-Id: Idd529f6682d478e0dcd2d469cb802192190602f6
Reviewed-on: https://go-review.googlesource.com/c/154583
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-12-18 00:13:58 +00:00

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882 B
Go

// run
// Copyright 2018 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.
// Verify that we emit a valid type descriptor for
// a fairly deeply nested type.
package main
import "fmt"
import "strings"
func main() {
a := [][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]int{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{42}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}
got := fmt.Sprint(a)
want := strings.Repeat("[", 100) + "42" + strings.Repeat("]", 100)
if got != want {
fmt.Printf("got %q\nwant %q\n", got, want)
}
}