read -m abc crashes Fish.

[acomagu]

read -m abc crashes Fish with SIGABRT

Reproduction:

$ sh -c 'env -i TERM=$TERM HOME=$(mktemp -d) fish'
yuki@acm-envy2-win-wsl /t/tmp.Q2NFvUkKpg> read -m abc
error: /build/fish/src/fish-3.1.2/src/builtin_read.cpp:188: failed assertion: unexpected retval from wgetopt_long
<E> fish: Backtrace:
0   fish(+0x62b73) [0x557cec2dbb73]
1   builtin_read(parser_t&, io_streams_t&, wchar_t**) + 354
2   builtin_run(parser_t&, int, wchar_t**, io_streams_t&) + 310
3   fish(+0xbb039) [0x557cec334039]
4   exec_job(parser_t&, std::shared_ptr<job_t> const&, job_lineage_t const&) + 816
5   parse_execution_context_t::run_1_job(tnode_t<grammar::job>, block_t const*) + 2620
6   parse_execution_context_t::run_job_conjunction(tnode_t<grammar::job_conjunction>, block_t const*) + 424
7   eval_result_t parse_execution_context_t::run_job_list<grammar::job_list>(tnode_t<grammar::job_list>, block_t const*) + 201
8   parse_execution_context_t::eval_node(tnode_t<grammar::job_list>, block_t const*) + 232
9   eval_result_t parser_t::eval_node<grammar::job_list>(std::shared_ptr<parsed_source_t const> const&, tnode_t<grammar::job_list>, job_lineage_t, block_type_
t) + 430
10  fish(+0x104393) [0x557cec37d393]
11  parser_t::eval(std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&, io_chain_t const&, block_type_t, maybe_t<i
nt>) + 249
12  reader_run_command(parser_t&, std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&) + 405
13  reader_read(parser_t&, int, io_chain_t const&) + 1781
14  main + 5964
15  __libc_start_main + 242
16  _start + 46

fish: “sh -c 'env -i TERM=$TERM HOME=$…” terminated by signal SIGABRT (Abort)

Environment:

$ fish --version
fish, version 3.1.2
$ uname -a
Linux acm-envy2-win-wsl 5.4.72-microsoft-standard-WSL2 #1 SMP Wed Oct 28 23:40:43 UTC 2020 x86_64 GNU/Linux
$ echo $TERM
xterm-256color

[zanchey]

Heh. Looks like -B got added by accident in bd8c8ce.