describe: Store commit_names in a hash table by commit SHA1

diff --git a/builtin/index-pack.c b/builtin/index-pack.c
index 2e680d7a7ac3495c9d6bd10e0fa6a6ae28bb8670..8dc5c0b5410d4bb57607bab690126f22d954dd7a 100644 (file)
--- a/builtin/index-pack.c
+++ b/builtin/index-pack.c
@@ -11,7 +11,7 @@
 #include "exec_cmd.h"
 
 static const char index_pack_usage[] =
-"git index-pack [-v] [-o <index-file>] [{ --keep | --keep=<msg> }] [--strict] { <pack-file> | --stdin [--fix-thin] [<pack-file>] }";
+"git index-pack [-v] [-o <index-file>] [ --keep | --keep=<msg> ] [--strict] (<pack-file> | --stdin [--fix-thin] [<pack-file>])";
 
 struct object_entry
 {
@@ -161,7 +161,7 @@ static void use(int bytes)
        input_offset += bytes;
 
        /* make sure off_t is sufficiently large not to wrap */
-       if (consumed_bytes > consumed_bytes + bytes)
+       if (signed_add_overflows(consumed_bytes, bytes))
                die("pack too large for current definition of off_t");
        consumed_bytes += bytes;
 }