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| author | Shenghou Ma <minux.ma@gmail.com> | 2014-04-16 23:12:06 -0400 |
|---|---|---|
| committer | Russ Cox <rsc@golang.org> | 2014-04-16 23:12:06 -0400 |
| commit | 32dffef0980eb810b97f48eb9dfabb33602a0472 (patch) | |
| tree | fa45e11ba0da9c827732b7e8a7d28fcc1394b77f | |
| parent | dc370995a87a37b43546a9ac3413d533d24e0665 (diff) | |
| download | go-32dffef0980eb810b97f48eb9dfabb33602a0472.tar.gz go-32dffef0980eb810b97f48eb9dfabb33602a0472.zip | |
cmd/gc: fix segfault in isgoconst.
Variables declared with 'var' have no sym->def.
Fixes #7794.
LGTM=rsc
R=golang-codereviews, bradfitz, rsc
CC=golang-codereviews
https://golang.org/cl/88360043
| -rw-r--r-- | src/cmd/gc/const.c | 2 | ||||
| -rw-r--r-- | test/fixedbugs/issue7794.go | 12 |
2 files changed, 13 insertions, 1 deletions
diff --git a/src/cmd/gc/const.c b/src/cmd/gc/const.c index 28d0725d33..f356c4f59a 100644 --- a/src/cmd/gc/const.c +++ b/src/cmd/gc/const.c @@ -1594,7 +1594,7 @@ isgoconst(Node *n) case ONAME: l = n->sym->def; - if(l->op == OLITERAL && n->val.ctype != CTNIL) + if(l && l->op == OLITERAL && n->val.ctype != CTNIL) return 1; break; diff --git a/test/fixedbugs/issue7794.go b/test/fixedbugs/issue7794.go new file mode 100644 index 0000000000..1e303bd4f2 --- /dev/null +++ b/test/fixedbugs/issue7794.go @@ -0,0 +1,12 @@ +// compile + +// Copyright 2014 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. + +package main + +func main() { + var a [10]int + const ca = len(a) +} |