search for: __strchr_sse2

Hi all, I was trying to compile dfsan with wget. (Just enabling the dfsan feature, without actually making changes to the source code) Without dfsan, I am able to compile and run wget 1.19.5 (available at https://ftp.gnu.org/gnu/wget/wget-1.19.5.tar.gz). But when compiled with dfsan, it encountered a null pointer dereference error. Following an old post:

...<Xapian::PostingIterator::Internal*, std::allocator<Xapian::PostingIterator::Internal*> > >, long, Xapian::PostingIterator::Internal*, __gnu_cxx::__ops::_Iter_comp_val<Xapian::Internal::ComparePostListTermFreqAscending> > 0.06% /mnt/btr/public libc-2.28.so [.] __strchr_sse2 0.06% script/public-i perl [.] Perl_call_sv 0.06% /mnt/btr/public perl [.] Perl_pp_nextstate 0.06% perl perl [.] Perl_ck_stringify 0.06% /mnt/btr/public ld-2.28.so [.] _dl_relocate_object 0.06% /m...

Going back to the "prioritizing aggregated DBs" thread from February 2020, I've got 390 Xapian shards for 130 public inboxes I want to search against(*). There's more on the horizon (we're expecting tens of thousands of public inboxes). After bumping RLIMIT_NOFILE and running ->add_database a bunch, the actual queries seem to be taking ~30s (not good :x). Now I'm