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| author | nimelehin <nimelehin@gmail.com> | 2022-04-11 19:54:30 +0300 |
|---|---|---|
| committer | Gopher Robot <gobot@golang.org> | 2022-04-12 00:32:31 +0000 |
| commit | be0262a1279ab37ff2cae562de37afd333f5ada4 (patch) | |
| tree | 2bbaa793df1ca93e0608d14fbe4b49aa5bf2c073 /src/cmd | |
| parent | ec5e5dba6fbc4549f167c6db509a800e163296c8 (diff) | |
| download | go-be0262a1279ab37ff2cae562de37afd333f5ada4.tar.xz | |
cmd/compile: fix compilation crash with several blank labels
Fixes #52278
Change-Id: Ibf67c7b019feec277d316e04d93b458efea133fb
Reviewed-on: https://go-review.googlesource.com/c/go/+/399574
Reviewed-by: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Keith Randall <khr@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Diffstat (limited to 'src/cmd')
| -rw-r--r-- | src/cmd/compile/internal/escape/escape.go | 3 | ||||
| -rw-r--r-- | src/cmd/compile/internal/escape/stmt.go | 3 |
2 files changed, 6 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/escape/escape.go b/src/cmd/compile/internal/escape/escape.go index 4713ecddca..4408a531ec 100644 --- a/src/cmd/compile/internal/escape/escape.go +++ b/src/cmd/compile/internal/escape/escape.go @@ -210,6 +210,9 @@ func (b *batch) walkFunc(fn *ir.Func) { switch n.Op() { case ir.OLABEL: n := n.(*ir.LabelStmt) + if n.Label.IsBlank() { + break + } if e.labels == nil { e.labels = make(map[*types.Sym]labelState) } diff --git a/src/cmd/compile/internal/escape/stmt.go b/src/cmd/compile/internal/escape/stmt.go index 0afb5d64ef..4e8dd904ff 100644 --- a/src/cmd/compile/internal/escape/stmt.go +++ b/src/cmd/compile/internal/escape/stmt.go @@ -50,6 +50,9 @@ func (e *escape) stmt(n ir.Node) { case ir.OLABEL: n := n.(*ir.LabelStmt) + if n.Label.IsBlank() { + break + } switch e.labels[n.Label] { case nonlooping: if base.Flag.LowerM > 2 { |