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| author | Akim Demaille <demaille@gostai.com> | 2011-03-09 21:10:35 +0100 |
|---|---|---|
| committer | Akim Demaille <demaille@gostai.com> | 2011-03-09 21:10:35 +0100 |
| commit | a4d1bf6a9cdd337fc113c5a3fc7424e7491d6ea5 (patch) | |
| tree | 0dda502bac89f9cbff055073d1bd2df99be6479d /src/named-ref.c | |
| parent | 17d7bf83d02e2272c54d3486075091156d5d649f (diff) | |
| download | bison-a4d1bf6a9cdd337fc113c5a3fc7424e7491d6ea5.tar.gz | |
named references: fix double free.candidates/named-ref-free
In `rhs[name]: "a" | "b"', do not free "name" twice.
Reported by Tys Lefering.
<http://lists.gnu.org/archive/html/bug-bison/2010-06/msg00002.html>
* src/named-ref.h, src/named-ref.c (named_ref_copy): New.
* src/parse-gram.y (current_lhs): Rename as...
(current_lhs_symbol): this.
(current_lhs): New function. Use it to free the current lhs
named reference.
* src/reader.c: Bind lhs to a copy of the current named reference.
* src/symlist.c: Rely on free (0) being valid.
* tests/named-refs.at: Test this.
(cherry picked from commit 8f462efe923947cc4e72deea5b0fa93a5f88000d)
Conflicts:
src/parse-gram.y
Diffstat (limited to 'src/named-ref.c')
| -rw-r--r-- | src/named-ref.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/named-ref.c b/src/named-ref.c index 4bf3da12..132c7414 100644 --- a/src/named-ref.c +++ b/src/named-ref.c @@ -33,6 +33,12 @@ named_ref_new (uniqstr id, location loc) return res; } +named_ref * +named_ref_copy (const named_ref *r) +{ + return named_ref_new (r->id, r->loc); +} + void named_ref_free (named_ref *r) { |