Re: [PATCH 5/8] commit-graph: read `BIDX` chunk with `pair_chunk_expect()`

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On Fri, Oct 13, 2023 at 03:25:30PM -0400, Taylor Blau wrote:
> Perform an identical conversion as in previous commits to read the BIDX
> chunk.
>
> Signed-off-by: Taylor Blau <me@xxxxxxxxxxxx>
> ---
>  commit-graph.c | 18 ++++--------------
>  1 file changed, 4 insertions(+), 14 deletions(-)

Oops. This fails t4216 because it changes the warning() message, which I
thought I excluded from this patch :-<.

Here is a replacement that passes the test. I can reroll the entire
"series" if we decide that this is a worthwhile direction to go in:

--- 8< ---

Subject: [PATCH] commit-graph: read `BIDX` chunk with `pair_chunk_expect()`

Perform an identical conversion as in previous commits to read the BIDX
chunk.

Signed-off-by: Taylor Blau <me@xxxxxxxxxxxx>
---
 commit-graph.c | 18 ++++--------------
 1 file changed, 4 insertions(+), 14 deletions(-)

diff --git a/commit-graph.c b/commit-graph.c
index 0fab99f5dd..66c2e628d8 100644
--- a/commit-graph.c
+++ b/commit-graph.c
@@ -330,18 +330,6 @@ static int graph_read_oid_lookup(const unsigned char *chunk_start,
 	return 0;
 }

-static int graph_read_bloom_index(const unsigned char *chunk_start,
-				  size_t chunk_size, void *data)
-{
-	struct commit_graph *g = data;
-	if (chunk_size != g->num_commits * 4) {
-		warning("commit-graph changed-path index chunk is too small");
-		return -1;
-	}
-	g->chunk_bloom_indexes = chunk_start;
-	return 0;
-}
-
 static int graph_read_bloom_data(const unsigned char *chunk_start,
 				  size_t chunk_size, void *data)
 {
@@ -461,8 +449,10 @@ struct commit_graph *parse_commit_graph(struct repo_settings *s,
 	}

 	if (s->commit_graph_read_changed_paths) {
-		read_chunk(cf, GRAPH_CHUNKID_BLOOMINDEXES,
-			   graph_read_bloom_index, graph);
+		if (pair_chunk_expect(cf, GRAPH_CHUNKID_BLOOMINDEXES,
+				      &graph->chunk_bloom_indexes,
+				      st_mult(graph->num_commits, 4)) == -1)
+			warning(_("commit-graph changed-path index chunk is too small"));
 		read_chunk(cf, GRAPH_CHUNKID_BLOOMDATA,
 			   graph_read_bloom_data, graph);
 	}
--
2.38.0.16.g393fd4c6db





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