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https://github.com/asg017/sqlite-vec.git
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575371d751
Add DiskANN graph-based index: builds a Vamana graph with configurable R (max degree) and L (search list size, separate for insert/query), supports int8 quantization with rescore, lazy reverse-edge replacement, pre-quantized query optimization, and insert buffer reuse. Includes shadow table management, delete support, KNN integration, compile flag (SQLITE_VEC_ENABLE_DISKANN), release-demo workflow, fuzz targets, and tests. Fixes rescore int8 quantization bug.
44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
/**
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* Fuzz target for DiskANN CREATE TABLE config parsing.
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* Feeds fuzz data as the INDEXED BY diskann(...) option string.
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*/
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#include <stdint.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "sqlite-vec.h"
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#include "sqlite3.h"
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#include <assert.h>
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int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
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if (size > 4096) return 0; /* Limit input size */
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int rc;
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sqlite3 *db;
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sqlite3_stmt *stmt;
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rc = sqlite3_open(":memory:", &db);
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assert(rc == SQLITE_OK);
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rc = sqlite3_vec_init(db, NULL, NULL);
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assert(rc == SQLITE_OK);
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sqlite3_str *s = sqlite3_str_new(NULL);
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assert(s);
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sqlite3_str_appendall(s,
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"CREATE VIRTUAL TABLE v USING vec0("
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"emb float[64] INDEXED BY diskann(");
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sqlite3_str_appendf(s, "%.*s", (int)size, data);
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sqlite3_str_appendall(s, "))");
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const char *zSql = sqlite3_str_finish(s);
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assert(zSql);
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rc = sqlite3_prepare_v2(db, zSql, -1, &stmt, NULL);
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sqlite3_free((char *)zSql);
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if (rc == SQLITE_OK) {
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sqlite3_step(stmt);
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}
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sqlite3_finalize(stmt);
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sqlite3_close(db);
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return 0;
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}
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