This commit is contained in:
John Gallagher 2016-02-01 10:48:30 -05:00
parent ea14115d6c
commit f4c3ba0fa2

View File

@ -489,9 +489,10 @@ impl InnerConnection {
where D: Aggregate<A, T>,
T: ToResult
{
unsafe fn aggregate_context<A>(ctx: *mut sqlite3_context, bytes: usize) -> Option<*mut *mut A> {
let pac = ffi::sqlite3_aggregate_context(ctx, bytes as c_int)
as *mut *mut A;
unsafe fn aggregate_context<A>(ctx: *mut sqlite3_context,
bytes: usize)
-> Option<*mut *mut A> {
let pac = ffi::sqlite3_aggregate_context(ctx, bytes as c_int) as *mut *mut A;
if pac.is_null() {
return None;
}
@ -559,12 +560,14 @@ impl InnerConnection {
// Within the xFinal callback, it is customary to set N=0 in calls to
// sqlite3_aggregate_context(C,N) so that no pointless memory allocations occur.
let a: Option<A> = match aggregate_context(ctx, 0) {
Some(pac) => if (*pac).is_null() {
Some(pac) => {
if (*pac).is_null() {
None
} else {
let a = Box::from_raw(*pac);
Some(*a)
},
}
}
None => None,
};