Document sqlite3_wal_hook() return.

FossilOrigin-Name: 8acaf7964551b4524fcdbb8d01fae7b0911508ecf6dcf23c3e0f8d8c790b78d8

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-D 2021-06-24T18:23:54.265
+C Document\ssqlite3_wal_hook()\sreturn.
+D 2021-06-25T00:25:38.963
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diff --git a/manifest.uuid b/manifest.uuid
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diff --git a/src/sqlite.h.in b/src/sqlite.h.in
index 6dcd25d4c05375a385663f2dc6f073cfa46a9487..cad89b37b1c7361bbc59c061c126d8cfb6edb831 100644 (file)
--- a/src/sqlite.h.in
+++ b/src/sqlite.h.in
@@ -9031,8 +9031,9 @@ void sqlite3_log(int iErrCode, const char *zFormat, ...);
 **
 ** A single database handle may have at most a single write-ahead log callback 
 ** registered at one time. ^Calling [sqlite3_wal_hook()] replaces any
-** previously registered write-ahead log callback. ^Note that the
-** [sqlite3_wal_autocheckpoint()] interface and the
+** previously registered write-ahead log callback. ^The return value is
+** a copy of the third parameter from the previous call, if any, or 0.
+** ^Note that the [sqlite3_wal_autocheckpoint()] interface and the
 ** [wal_autocheckpoint pragma] both invoke [sqlite3_wal_hook()] and will
 ** overwrite any prior [sqlite3_wal_hook()] settings.
 */