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fetch: use heap buffer to format reflog 

Part of the reflog content comes from the environment, which
can be much larger than our fixed buffer. Let's use a heap
buffer so we avoid truncating it.

Signed-off-by: Jeff King <peff@peff.net>
This commit is contained in:
Jeff King 2017-03-28 15:46:26 -04:00 committed by Junio C Hamano
parent b0ceab98d7
commit 1412f762e0
1 changed files with 4 additions and 2 deletions
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6
builtin/fetch.c
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@ -421,7 +421,7 @@ static int s_update_ref(const char *action,
struct ref *ref,
int check_old)
{
char msg[1024];
char *msg;
char *rla = getenv("GIT_REFLOG_ACTION");
struct ref_transaction *transaction;
struct strbuf err = STRBUF_INIT;
@ -431,7 +431,7 @@ static int s_update_ref(const char *action,
return 0;
if (!rla)
rla = default_rla.buf;
snprintf(msg, sizeof(msg), "%s: %s", rla, action);
msg = xstrfmt("%s: %s", rla, action);
transaction = ref_transaction_begin(&err);
if (!transaction ||
@ -449,11 +449,13 @@ static int s_update_ref(const char *action,
ref_transaction_free(transaction);
strbuf_release(&err);
free(msg);
return 0;
fail:
ref_transaction_free(transaction);
error("%s", err.buf);
strbuf_release(&err);
free(msg);
return df_conflict ? STORE_REF_ERROR_DF_CONFLICT
: STORE_REF_ERROR_OTHER;
}