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wire: derive_channel_id should accept const struct *bitcoin_txid

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It's not modifying anything in the txid itself, just mashing it up
with the txout index.

Signed-off-by: Christian Decker <decker.christian@gmail.com>
This commit is contained in:
Christian Decker
2019-02-07 15:40:28 +01:00
parent ca3db290ba
commit bccb8db974
2 changed files with 2 additions and 2 deletions
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2
wire/fromwire.c
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@@ -253,7 +253,7 @@ REGISTER_TYPE_TO_HEXSTR(channel_id);
* (i.e. `funding_output_index` alters the last 2 bytes).
*/
void derive_channel_id(struct channel_id *channel_id,
struct bitcoin_txid *txid, u16 txout)
const struct bitcoin_txid *txid, u16 txout)
{
BUILD_ASSERT(sizeof(*channel_id) == sizeof(*txid));
memcpy(channel_id, txid, sizeof(*channel_id));

2
wire/wire.h
View File

@@ -30,7 +30,7 @@ struct siphash_seed;
typedef char wirestring;
void derive_channel_id(struct channel_id *channel_id,
struct bitcoin_txid *txid, u16 txout);
const struct bitcoin_txid *txid, u16 txout);
/* Read the type; returns -1 if not long enough. cursor is a tal ptr. */
int fromwire_peektype(const u8 *cursor);