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Rig sqlite3_serialize() so that it will initialize a previously uninitialized

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database prior to serializing it, so that it does not have a zero-byte size
and does not return NULL (except for OOM).
[forum:/forumpost/498777780e16880a|Forum thread 498777780e16880a].

FossilOrigin-Name: e638d5e408ea2e189b6771d16bbc2e42c606e88e05fbea78079b6e39e41f344c
This commit is contained in:
drh
2024-01-20 16:29:19 +00:00
parent 4c43f1881e
commit b23f61b73f
4 changed files with 28 additions and 8 deletions
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8
src/memdb.c
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@@ -799,6 +799,14 @@ unsigned char *sqlite3_serialize(
pOut = 0;
}else{
sz = sqlite3_column_int64(pStmt, 0)*szPage;
if( sz==0 ){
sqlite3_reset(pStmt);
sqlite3_exec(db, "BEGIN IMMEDIATE; COMMIT;", 0, 0, 0);
rc = sqlite3_step(pStmt);
if( rc==SQLITE_ROW ){
sz = sqlite3_column_int64(pStmt, 0)*szPage;
}
}
if( piSize ) *piSize = sz;
if( mFlags & SQLITE_SERIALIZE_NOCOPY ){
pOut = 0;