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runtime: fix defer of nil func
Fixes #8047. LGTM=r, iant R=golang-codereviews, r, iant CC=dvyukov, golang-codereviews, khr https://golang.org/cl/105140044
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@ -856,7 +856,12 @@ runtime·newstack(void)
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void
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runtime·gostartcallfn(Gobuf *gobuf, FuncVal *fv)
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{
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runtime·gostartcall(gobuf, fv->fn, fv);
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void *fn;
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fn = nil;
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if(fv != nil)
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fn = fv->fn;
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runtime·gostartcall(gobuf, fn, fv);
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}
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// Maybe shrink the stack being used by gp.
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22
test/fixedbugs/issue8047b.go
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22
test/fixedbugs/issue8047b.go
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@ -0,0 +1,22 @@
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// run
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// Copyright 2014 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Issue 8047. Defer setup during panic shouldn't crash for nil defer.
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package main
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func main() {
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defer func() {
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recover()
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}()
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f()
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}
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func f() {
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var g func()
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defer g()
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panic(1)
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}
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