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authorPatrick Steinhardt <ps@pks.im>2024-02-06 07:35:27 +0100
committerJunio C Hamano <gitster@pobox.com>2024-02-06 12:10:08 -0800
commitb4ff12c8eefff9cba73ba3cb7492111adfa31d87 (patch)
treecf75adb950d3c8bc7fd2743513ead645a5dbe453 /reftable/block.c
parentf6b58c1be40ba4bd6e7f2364acfe5fa34ce04120 (diff)
downloadgit-b4ff12c8eefff9cba73ba3cb7492111adfa31d87.tar.xz
reftable: introduce macros to allocate arrays
Similar to the preceding commit, let's carry over macros to allocate arrays with `REFTABLE_ALLOC_ARRAY()` and `REFTABLE_CALLOC_ARRAY()`. This requires us to change the signature of `reftable_calloc()`, which only takes a single argument right now and thus puts the burden on the caller to calculate the final array's size. This is a net improvement though as it means that we can now provide proper overflow checks when multiplying the array size with the member size. Convert callsites of `reftable_calloc()` to the new signature and start using the new macros where possible. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'reftable/block.c')
-rw-r--r--reftable/block.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/reftable/block.c b/reftable/block.c
index 6952d0facf..838759823a 100644
--- a/reftable/block.c
+++ b/reftable/block.c
@@ -143,8 +143,10 @@ int block_writer_finish(struct block_writer *w)
int block_header_skip = 4 + w->header_off;
uLongf src_len = w->next - block_header_skip;
uLongf dest_cap = src_len * 1.001 + 12;
+ uint8_t *compressed;
+
+ REFTABLE_ALLOC_ARRAY(compressed, dest_cap);
- uint8_t *compressed = reftable_malloc(dest_cap);
while (1) {
uLongf out_dest_len = dest_cap;
int zresult = compress2(compressed, &out_dest_len,
@@ -201,9 +203,9 @@ int block_reader_init(struct block_reader *br, struct reftable_block *block,
uLongf dst_len = sz - block_header_skip; /* total size of dest
buffer. */
uLongf src_len = block->len - block_header_skip;
- /* Log blocks specify the *uncompressed* size in their header.
- */
- uncompressed = reftable_malloc(sz);
+
+ /* Log blocks specify the *uncompressed* size in their header. */
+ REFTABLE_ALLOC_ARRAY(uncompressed, sz);
/* Copy over the block header verbatim. It's not compressed. */
memcpy(uncompressed, block->data, block_header_skip);