From 57e6fc69588ea5e1b6a151d60f2cf9fa636251c1 Mon Sep 17 00:00:00 2001 From: Michael Haggerty Date: Mon, 21 May 2012 09:59:59 +0200 Subject: [PATCH] cmd_fetch_pack(): respect constness of argv parameter The old code cast away the constness of the strings passed to the function in argument argv[], which could result in their being modified by filter_refs(). Fix by copying reference names from argv and putting them into our own array (similarly to how refnames passed to stdin were already handled). Signed-off-by: Michael Haggerty Signed-off-by: Junio C Hamano --- builtin/fetch-pack.c | 23 ++++++++++------------- 1 file changed, 10 insertions(+), 13 deletions(-) diff --git a/builtin/fetch-pack.c b/builtin/fetch-pack.c index dc4b1dcec0..80e72df494 100644 --- a/builtin/fetch-pack.c +++ b/builtin/fetch-pack.c @@ -898,10 +898,11 @@ static void fetch_pack_setup(void) int cmd_fetch_pack(int argc, const char **argv, const char *prefix) { - int i, ret, nr_heads; + int i, ret; struct ref *ref = NULL; const char *dest = NULL; - char **heads; + int alloc_heads = 0, nr_heads = 0; + char **heads = NULL; int fd[2]; char *pack_lockfile = NULL; char **pack_lockfile_ptr = NULL; @@ -909,7 +910,6 @@ int cmd_fetch_pack(int argc, const char **argv, const char *prefix) packet_trace_identity("fetch-pack"); - heads = NULL; for (i = 1; i < argc && *argv[i] == '-'; i++) { const char *arg = argv[i]; @@ -975,17 +975,14 @@ int cmd_fetch_pack(int argc, const char **argv, const char *prefix) else usage(fetch_pack_usage); - heads = (char **)(argv + i); - nr_heads = argc - i; - + /* + * Copy refs from cmdline to growable list, then append any + * refs from the standard input: + */ + ALLOC_GROW(heads, argc - i, alloc_heads); + for (; i < argc; i++) + heads[nr_heads++] = xstrdup(argv[i]); if (args.stdin_refs) { - /* - * Copy refs from cmdline to new growable list, then - * append the refs from the standard input. - */ - int alloc_heads = nr_heads; - int size = nr_heads * sizeof(*heads); - heads = memcpy(xmalloc(size), heads, size); if (args.stateless_rpc) { /* in stateless RPC mode we use pkt-line to read * from stdin, until we get a flush packet