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Fix a problem in the sessions module causing sqlite3session_apply_strm() to

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allocate enough memory for the entire input buffer - which defeats the point
of a streaming interface.

FossilOrigin-Name: 7594e60935b0b5dcf764476dccdf9b403303818a0419a30bc2c16d58e44f6d04
This commit is contained in:
dan
2018-04-06 16:22:25 +00:00
parent 9a3c375fce
commit 3e259bcd96
5 changed files with 77 additions and 11 deletions
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4
ext/session/sqlite3session.c
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@ -68,7 +68,7 @@ struct SessionBuffer {
** sqlite3changeset_start_strm()).
*/
struct SessionInput {
int bNoDiscard; /* If true, discard no data */
int bNoDiscard; /* If true, do not discard in InputBuffer() */
int iCurrent; /* Offset in aData[] of current change */
int iNext; /* Offset in aData[] of next change */
u8 *aData; /* Pointer to buffer containing changeset */
@ -2593,7 +2593,7 @@ int sqlite3changeset_start_strm(
** object and the buffer is full, discard some data to free up space.
*/
static void sessionDiscardData(SessionInput *pIn){
if( pIn->bEof && pIn->xInput && pIn->iNext>=SESSIONS_STRM_CHUNK_SIZE ){
if( pIn->xInput && pIn->iNext>=SESSIONS_STRM_CHUNK_SIZE ){
int nMove = pIn->buf.nBuf - pIn->iNext;
assert( nMove>=0 );
if( nMove>0 ){