From 0e3b97cccbec2bd01eae4b3267bf00a9bfb277d8 Mon Sep 17 00:00:00 2001 From: Derrick Stolee Date: Wed, 27 Jun 2018 09:24:28 -0400 Subject: [PATCH] commit-graph: fix GRAPH_MIN_SIZE The GRAPH_MIN_SIZE macro should be the smallest size of a parsable commit-graph file. However, the minimum number of chunks was wrong. It is possible to write a commit-graph file with zero commits, and that violates this macro's value. Rewrite the macro, and use extra macros to better explain the magic constants. Signed-off-by: Derrick Stolee Signed-off-by: Junio C Hamano --- commit-graph.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/commit-graph.c b/commit-graph.c index b63a1fc85e..f83f6d2373 100644 --- a/commit-graph.c +++ b/commit-graph.c @@ -35,10 +35,11 @@ #define GRAPH_LAST_EDGE 0x80000000 +#define GRAPH_HEADER_SIZE 8 #define GRAPH_FANOUT_SIZE (4 * 256) #define GRAPH_CHUNKLOOKUP_WIDTH 12 -#define GRAPH_MIN_SIZE (5 * GRAPH_CHUNKLOOKUP_WIDTH + GRAPH_FANOUT_SIZE + \ - GRAPH_OID_LEN + 8) +#define GRAPH_MIN_SIZE (GRAPH_HEADER_SIZE + 4 * GRAPH_CHUNKLOOKUP_WIDTH \ + + GRAPH_FANOUT_SIZE + GRAPH_OID_LEN) char *get_commit_graph_filename(const char *obj_dir) {