Compiler segfault in hash_const_val

[jayschwa]

$ ~/zig/build/zig version
0.5.0+38791ac61

const std = @import("std");

const Point = struct {
    x: isize,
    y: isize,
};

pub fn main() !void {
    const allocator = std.debug.global_allocator;
    const stdin = &std.io.getStdIn().inStream().stream;
    const stdout = &std.io.getStdOut().outStream().stream;

    const wires = [_]*std.ArrayList(Point) {
        &std.ArrayList(Point).init(allocator),
        &std.ArrayList(Point).init(allocator),
    };

    stdout.print("{}\n", wires);
}

$ lldb -- ~/zig/build/zig build-exe ~/crashes.zig 
(lldb) target create "/home/jayschwa/zig/build/zig"
Current executable set to '/home/jayschwa/zig/build/zig' (x86_64).
(lldb) settings set -- target.run-args  "build-exe" "/home/jayschwa/crashes.zig"
(lldb) run
Process 23262 launched: '/home/jayschwa/zig/build/zig' (x86_64)
Process 23262 stopped
* thread #1, name = 'zig', stop reason = signal SIGSEGV: invalid address (fault address: 0x12)
    frame #0: 0x00005555560c34e0 zig`::hash_const_val(const_val=0x000000000000000a) at analyze.cpp:5084:5
   5081	}
   5082	
   5083	static uint32_t hash_const_val(ZigValue *const_val) {
-> 5084	    assert(const_val->special == ConstValSpecialStatic);
   5085	    switch (const_val->type->id) {
   5086	        case ZigTypeIdOpaque:
   5087	            zig_unreachable();
(lldb) bt
* thread #1, name = 'zig', stop reason = signal SIGSEGV: invalid address (fault address: 0x12)
  * frame #0: 0x00005555560c34e0 zig`::hash_const_val(const_val=0x000000000000000a) at analyze.cpp:5084:5
    frame #1: 0x00005555560c9a06 zig`type_id_hash(x=TypeId @ 0x00007fffffffd300) at analyze.cpp:7042:58
    frame #2: 0x00005555560d4e04 zig`HashMap<TypeId, ZigType*, &(type_id_hash(TypeId)), &(type_id_eql(TypeId, TypeId))>::key_to_index(this=0x000055555871d640, key=0x00007fffffffd420) const at hash_map.hpp:238:34
    frame #3: 0x00005555560d378b zig`HashMap<TypeId, ZigType*, &(type_id_hash(TypeId)), &(type_id_eql(TypeId, TypeId))>::internal_get(this=0x000055555871d640, key=0x00007fffffffd420) const at hash_map.hpp:223:13
    frame #4: 0x00005555560d2b5d zig`HashMap<TypeId, ZigType*, &(type_id_hash(TypeId)), &(type_id_eql(TypeId, TypeId))>::maybe_get(this=0x000055555871d640, key=0x00007fffffffd420) const at hash_map.hpp:81:32
    frame #5: 0x00005555560b4875 zig`get_pointer_to_type_extra2(g=0x000055555871d4c0, child_type=0x000055555f2afa20, is_const=true, is_volatile=false, ptr_len=PtrLenUnknown, byte_alignment=0, bit_offset_in_host=0, host_int_bytes=0, allow_zero=false, vector_index=4294967295, inferred_struct_field=0x0000000000000000, sentinel=0x000000000000000a) at analyze.cpp:554:54
    frame #6: 0x0000555556058d53 zig`::type_info_to_type(ira=0x000055555f527e30, instruction=0x000055555f53b8d0, tagTypeId=ZigTypeIdPointer, payload=0x000055555f539530) at ir.cpp:22939:63
    frame #7: 0x00005555560591a4 zig`::ir_analyze_instruction_type(ira=0x000055555f527e30, instruction=0x000055555f51e3f0) at ir.cpp:23015:38
    frame #8: 0x000055555606bbdf zig`::ir_analyze_instruction_base(ira=0x000055555f527e30, instruction=0x000055555f51e3f0) at ir.cpp:27953:47
    frame #9: 0x000055555606c3ac zig`ir_analyze(codegen=0x000055555871d4c0, old_exec=0x000055555f420760, new_exec=0x000055555f4205a0, expected_type=0x0000555559104140, expected_type_source_node=0x00005555591ea360) at ir.cpp:28100:69
    frame #10: 0x00005555560c1a14 zig`::analyze_fn_ir(g=0x000055555871d4c0, fn=0x000055555f420520, return_type_node=0x00005555591ea360) at analyze.cpp:4606:44
    frame #11: 0x00005555560c1fe5 zig`::analyze_fn_body(g=0x000055555871d4c0, fn_table_entry=0x000055555f420520) at analyze.cpp:4714:18
    frame #12: 0x00005555560c2886 zig`semantic_analyze(g=0x000055555871d4c0) at analyze.cpp:4826:28
    frame #13: 0x0000555555fee906 zig`::gen_root_source(g=0x000055555871d4c0) at codegen.cpp:9239:25
    frame #14: 0x0000555555ff2757 zig`codegen_build_and_link(g=0x000055555871d4c0) at codegen.cpp:10244:28
    frame #15: 0x0000555555fc55ad zig`main(argc=3, argv=0x00007fffffffdf88) at main.cpp:1286:39
    frame #16: 0x00007ffff38891e3 libc.so.6`__libc_start_main(main=(zig`main at main.cpp:328:33), argc=3, argv=0x00007fffffffdf88, init=<unavailable>, fini=<unavailable>, rtld_fini=<unavailable>, stack_end=0x00007fffffffdf78) at libc-start.c:308:16
    frame #17: 0x0000555555fbfb7e zig`_start + 46