apunkt/sqlite-vec
1
0
Fork 0
mirror of https://github.com/asg017/sqlite-vec.git synced 2026-04-25 16:56:27 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Initialize rescore distance variable to FLT_MAX

Browse source 
The `dist` variable in rescore KNN quantized distance computation was
uninitialized. If the switch on quantizer_type or distance_metric
didn't match any case, the uninitialized value would propagate into
the top-k heap, potentially returning garbage results.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Alex Garcia 2026-03-31 14:35:55 -07:00
parent 82f4eb08bf
commit 5e4c557f93
1 changed files with 1 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

2
sqlite-vec-rescore.c
View file

@ -465,7 +465,7 @@ static int rescore_knn(vec0_vtab *p, vec0_cursor *pCur,
for (int j = 0; j < p->chunk_size; j++) {
if (!bitmap_get(b, j))
continue;
f32 dist;
f32 dist = FLT_MAX;
switch (vector_column->rescore.quantizer_type) {
case VEC0_RESCORE_QUANTIZER_BIT: {
const u8 *base_j = ((u8 *)baseVectors) + (j * (qdim / CHAR_BIT));