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authorJeff King <peff@peff.net>2018-02-08 13:47:49 -0500
committerJunio C Hamano <gitster@pobox.com>2018-02-08 12:37:30 -0800
commitbc9d4dc5b07c05c7b26a4e781b7538db7c775fc3 (patch)
treef4d1f0c00e6c5b463fd6e548ae4f53ec0f55f37f
parent8279ed033f703d4115bee620dccd32a9ec94d9aa (diff)
downloadgit-bc9d4dc5b07c05c7b26a4e781b7538db7c775fc3.tar.gz
correct error messages for NULL packet_read_line()
The packet_read_line() function dies if it gets an unexpected EOF. It only returns NULL if we get a flush packet (or technically, a zero-length "0004" packet, but nobody is supposed to send those, and they are indistinguishable from a flush in this interface). Let's correct error messages which claim an unexpected EOF; it's really an unexpected flush packet. While we're here, let's also check "!line" instead of "!len" in the second case. The two events should always coincide, but checking "!line" makes it more obvious that we are not about to dereference NULL. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
-rw-r--r--builtin/archive.c2
-rw-r--r--fetch-pack.c4
2 files changed, 3 insertions, 3 deletions
diff --git a/builtin/archive.c b/builtin/archive.c
index f863465a0f..73971d0dd2 100644
--- a/builtin/archive.c
+++ b/builtin/archive.c
@@ -55,7 +55,7 @@ static int run_remote_archiver(int argc, const char **argv,
buf = packet_read_line(fd[0], NULL);
if (!buf)
- die(_("git archive: expected ACK/NAK, got EOF"));
+ die(_("git archive: expected ACK/NAK, got a flush packet"));
if (strcmp(buf, "ACK")) {
if (starts_with(buf, "NACK "))
die(_("git archive: NACK %s"), buf + 5);
diff --git a/fetch-pack.c b/fetch-pack.c
index 9f6b07ad91..54acb421ae 100644
--- a/fetch-pack.c
+++ b/fetch-pack.c
@@ -260,8 +260,8 @@ static enum ack_type get_ack(int fd, struct object_id *result_oid)
char *line = packet_read_line(fd, &len);
const char *arg;
- if (!len)
- die(_("git fetch-pack: expected ACK/NAK, got EOF"));
+ if (!line)
+ die(_("git fetch-pack: expected ACK/NAK, got a flush packet"));
if (!strcmp(line, "NAK"))
return NAK;
if (skip_prefix(line, "ACK ", &arg)) {