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-rw-r--r--read-cache.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/read-cache.c b/read-cache.c
index e447751823..406fe76707 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -1376,12 +1376,24 @@ static int verify_hdr(struct cache_header *hdr, unsigned long size)
git_SHA_CTX c;
unsigned char sha1[20];
int hdr_version;
+ int do_checksum = 1; /* default to true for now */
if (hdr->hdr_signature != htonl(CACHE_SIGNATURE))
return error("bad signature");
hdr_version = ntohl(hdr->hdr_version);
if (hdr_version < INDEX_FORMAT_LB || INDEX_FORMAT_UB < hdr_version)
return error("bad index version %d", hdr_version);
+
+ /*
+ * Since we run very early in command startup, git_config()
+ * may not have been called yet and the various "core_*"
+ * global variables haven't been set. So look it up
+ * explicitly.
+ */
+ git_config_get_bool("core.checksumindex", &do_checksum);
+ if (!do_checksum)
+ return 0;
+
git_SHA1_Init(&c);
git_SHA1_Update(&c, hdr, size - 20);
git_SHA1_Final(sha1, &c);