fix maybe-uninitialized warning in parse_trigrams

[plocate] / plocate.cpp

diff --git a/plocate.cpp b/plocate.cpp
index 7cc4f5a4eb2587f4bb685aaa83155e8951f06dd2..d021cc89d6281bf90a74cc56a005dd83b29b293c 100644 (file)
--- a/plocate.cpp
+++ b/plocate.cpp
@@ -31,6 +31,7 @@
 #include <string.h>
 #include <string>
 #include <string_view>
+#include <sys/stat.h>
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <thread>
@@ -347,7 +348,7 @@ uint64_t scan_all_docids(const vector<Needle> &needles, int fd, const Corpus &co
        dprintf("Using %u worker threads for linear scan.\n", num_threads);
        unique_ptr<WorkerThread[]> threads(new WorkerThread[num_threads]);
        for (unsigned i = 0; i < num_threads; ++i) {
-               threads[i].t = thread([&threads, &mu, &queue_added, &queue_removed, &work_queue, &done, &offsets, &needles, &access_rx_cache, engine{ corpus.engine }, &matched, i] {
+               threads[i].t = thread([&threads, &mu, &queue_added, &queue_removed, &work_queue, &done, &offsets, &needles, &access_rx_cache, &matched, i] {
                        // regcomp() takes a lock on the regex, so each thread will need its own.
                        const vector<Needle> *use_needles = &needles;
                        vector<Needle> recompiled_needles;
@@ -378,7 +379,8 @@ uint64_t scan_all_docids(const vector<Needle> &needles, int fd, const Corpus &co
                                for (uint32_t docid = io_docid; docid < last_docid; ++docid) {
                                        size_t relative_offset = offsets[docid] - offsets[io_docid];
                                        size_t len = offsets[docid + 1] - offsets[docid];
-                                       scan_file_block(*use_needles, { &compressed[relative_offset], len }, engine, &access_rx_cache, docid, &receiver, &matched);
+                                       // IOUringEngine isn't thread-safe, so we do any needed stat()s synchronously (nullptr engine).
+                                       scan_file_block(*use_needles, { &compressed[relative_offset], len }, /*engine=*/nullptr, &access_rx_cache, docid, &receiver, &matched);
                                }
                        }
                });