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cmd/compile: graceful handle error in noder LoadPackage

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When syntax.Parse returns error, noder.file will be nil. Currently, we
continue accessing it regardlessly and depend on gc.hidePanic to hide
the panic from user.

Instead, we should gracefully handle the error in LoadPackage, then exit
earlier if any error occurred.

Updates #43311

Change-Id: I0a108ef360bd4f0cc9f481071b8967355e1513af
Reviewed-on: https://go-review.googlesource.com/c/go/+/294030
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
This commit is contained in:
Cuong Manh Le 2021-02-19 12:42:57 +07:00
parent 4532467c18
commit b7f4307761
2 changed files with 4 additions and 1 deletions
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3
src/cmd/compile/internal/noder/noder.go
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@ -68,6 +68,9 @@ func LoadPackage(filenames []string) {
for e := range p.err { for e := range p.err {
p.errorAt(e.Pos, "%s", e.Msg) p.errorAt(e.Pos, "%s", e.Msg)
} }
if p.file == nil {
base.ErrorExit()
}
lines += p.file.EOF.Line() lines += p.file.EOF.Line()
} }
base.Timer.AddEvent(int64(lines), "lines") base.Timer.AddEvent(int64(lines), "lines")

2
test/fixedbugs/bug050.go
View File

@ -1,4 +1,4 @@
// errorcheck // errorcheck -d=panic
// Copyright 2009 The Go Authors. All rights reserved. // Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style // Use of this source code is governed by a BSD-style