diff mbox series

[v6,07/15] reftable: all xxx_free() functions accept NULL arguments

Message ID afee67fb60d28a1672601bf5c5dafef01f4ee1b8.1642691534.git.gitgitgadget@gmail.com (mailing list archive)
State Accepted
Commit 33e922432016f614327bcf5624c084b7c02fe9c3
Headers show
Series Reftable coverity fixes | expand

Commit Message

Han-Wen Nienhuys Jan. 20, 2022, 3:12 p.m. UTC 
From: Han-Wen Nienhuys <hanwen@google.com>

This fixes NULL derefs in error paths. Spotted by Coverity.

Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
---
 reftable/reader.c | 2 ++
 reftable/writer.c | 2 ++
 2 files changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/reftable/reader.c b/reftable/reader.c
index 35781593a29..272378ed1d5 100644
--- a/reftable/reader.c
+++ b/reftable/reader.c
@@ -646,6 +646,8 @@  int reftable_new_reader(struct reftable_reader **p,
 
 void reftable_reader_free(struct reftable_reader *r)
 {
+	if (!r)
+		return;
 	reader_close(r);
 	reftable_free(r);
 }
diff --git a/reftable/writer.c b/reftable/writer.c
index 35c8649c9b7..83a23daf60b 100644
--- a/reftable/writer.c
+++ b/reftable/writer.c
@@ -150,6 +150,8 @@  void reftable_writer_set_limits(struct reftable_writer *w, uint64_t min,
 
 void reftable_writer_free(struct reftable_writer *w)
 {
+	if (!w)
+		return;
 	reftable_free(w->block);
 	reftable_free(w);
 }