compiler crash when using std.meta.eql on TypeInfo for containers and pointers

[emekoi]

minimal reproduction.

const std = @import("std");

test "basic add functionality" {
    // fails
    std.testing.expect(comptime std.meta.eql(@typeInfo(opaque{}), @typeInfo(opaque {})));
}

test of other types

test "basic add functionality" {
    const E = struct {
        fn ex_fn_sync(a: i32, b: i32) i32 {
            return a + b;
        }

        fn ex_fn_async(a: i32, b: i32) i32 {
            suspend {
                resume @frame();
            }
            return a + b;
        }
    };

    const T = .{
        .{ "Type", @TypeOf(i32) },
        .{ "Void", void },
        .{ "Bool", bool },
        .{ "NoReturn", noreturn },
        .{ "Undefined", @TypeOf(undefined) },
        .{ "Null", @TypeOf(null) },
        .{ "EnumLiteral", @TypeOf(.literal) },
        .{ "Frame", @Frame(E.ex_fn_sync) },
        .{ "Frame", @Frame(E.ex_fn_async) },
        .{ "AnyFrame", anyframe },
        .{ "ErrorSet", error{} },
        .{ "ErrorSet", error{Single} },
        .{ "ErrorUnion", error{Union}!void },
        .{ "ErrorUnion", error{Union}!i32 },
        .{ "ComptimeInt", @TypeOf(1) },
        .{ "ComptimeFloat", @TypeOf(1.0) },
        .{ "Int", i32 },
        .{ "Float", f32 },
        .{ "Optional", ?i32 },
        .{ "Array", [3]i32 },
        .{ "Fn", fn (i32) i32 },
        .{ "Vector", std.meta.Vector(4, u8) },
        
        // none of the below ttype work i don't know how to test BoundFn's
        // perhaps containters don't because they allow declarations?
        // .{"Pointer", *i32},
        // .{"Struct", struct {}},
        // .{"Opaque", opaque {}},
        // .{"Union", union {Void: void}},
        // .{"Enum", enum {Field}},
        // .{"Enum", union(enum) {Void: void}},
    };

    inline for (T) |t| {
        // uncommenting this line reveals that zig will stop logging
        // strings in inline for loops and print their bytes instead
        // but revert to normal behavior outside the loop
        // @compileLog(t[0], @typeInfo(t[1]));
        testing.expect(comptime std.meta.eql(@typeInfo(t[1]), @typeInfo(t[1])));
    }
}

zig commit: b204ea0

stack trace

``` Assertion failed at ../src/stage1/analyze.cpp:7168 in const_values_equal. This is a bug in the Zig compiler.thread 4005931 panic: /home/emekankurumeh/dev/zig/src/stage1.zig:170:5: 0x55f3cbb5cfec in stage2_panic (zig1) @Panic(ptr[0..len]); ^ ../src/stage1/util.cpp:20:17: 0x55f3cc7b5dad in zig_panic (../src/stage1/util.cpp) ../src/stage1/util_base.hpp:53:18: 0x55f3cc69ebc5 in zig_assert (../src/stage1/analyze.cpp) ../src/stage1/analyze.cpp:7168:5: 0x55f3cc6b6186 in const_values_equal (../src/stage1/analyze.cpp) ../src/stage1/analyze.cpp:7230:40: 0x55f3cc6b6643 in const_values_equal (../src/stage1/analyze.cpp) ../src/stage1/analyze.cpp:7183:42: 0x55f3cc6b62fe in const_values_equal (../src/stage1/analyze.cpp) ../src/stage1/analyze.cpp:5928:40: 0x55f3cc6b2125 in fn_eval_eql (../src/stage1/analyze.cpp) ../src/stage1/hash_map.hpp:352:47: 0x55f3cc774caf in internal_get2 (../src/stage1/ir.cpp) ../src/stage1/hash_map.hpp:334:41: 0x55f3cc76a8ae in internal_get (../src/stage1/ir.cpp) ../src/stage1/hash_map.hpp:121:28: 0x55f3cc767b14 in maybe_get (../src/stage1/ir.cpp) ../src/stage1/ir.cpp:20810:72: 0x55f3cc722fe8 in ir_analyze_fn_call (../src/stage1/ir.cpp) ../src/stage1/ir.cpp:21258:43: 0x55f3cc724f79 in ir_analyze_fn_call_src (../src/stage1/ir.cpp) ../src/stage1/ir.cpp:21505:42: 0x55f3cc725f13 in ir_analyze_instruction_call (../src/stage1/ir.cpp) ../src/stage1/ir.cpp:32252:47: 0x55f3cc750f9d in ir_analyze_instruction_base (../src/stage1/ir.cpp) ../src/stage1/ir.cpp:32575:65: 0x55f3cc751fca in ir_analyze (../src/stage1/ir.cpp) ../src/stage1/ir.cpp:13701:38: 0x55f3cc707d1b in ir_eval_const_value (../src/stage1/ir.cpp) ../src/stage1/ir.cpp:20821:43: 0x55f3cc7230c5 in ir_analyze_fn_call (../src/stage1/ir.cpp) ../src/stage1/ir.cpp:21258:43: 0x55f3cc724f79 in ir_analyze_fn_call_src (../src/stage1/ir.cpp) ../src/stage1/ir.cpp:21505:42: 0x55f3cc725f13 in ir_analyze_instruction_call (../src/stage1/ir.cpp) ../src/stage1/ir.cpp:32252:47: 0x55f3cc750f9d in ir_analyze_instruction_base (../src/stage1/ir.cpp) ../src/stage1/ir.cpp:32575:65: 0x55f3cc751fca in ir_analyze (../src/stage1/ir.cpp) ../src/stage1/analyze.cpp:5060:44: 0x55f3cc6af6e2 in analyze_fn_ir (../src/stage1/analyze.cpp) ../src/stage1/analyze.cpp:5176:18: 0x55f3cc6afcaf in analyze_fn_body (../src/stage1/analyze.cpp) ../src/stage1/analyze.cpp:5288:28: 0x55f3cc6b0554 in semantic_analyze (../src/stage1/analyze.cpp) ../src/stage1/codegen.cpp:9457:25: 0x55f3cc68fdab in gen_root_source (../src/stage1/codegen.cpp) ../src/stage1/codegen.cpp:9506:20: 0x55f3cc69014c in codegen_build_object (../src/stage1/codegen.cpp) ../src/stage1/stage1.cpp:129:25: 0x55f3cc66180e in zig_stage1_build_object (../src/stage1/stage1.cpp) /home/emekankurumeh/dev/zig/src/stage1.zig:142:32: 0x55f3cbecb344 in Module.build_object (zig1) zig_stage1_build_object(mod); ^ /home/emekankurumeh/dev/zig/src/Compilation.zig:3232:31: 0x55f3cbced2a6 in Compilation.updateStage1Module (zig1) stage1_module.build_object(); ^ /home/emekankurumeh/dev/zig/src/Compilation.zig:1688:36: 0x55f3cbca60fb in Compilation.performAllTheWork (zig1) self.updateStage1Module(main_progress_node) catch |err| { ^ /home/emekankurumeh/dev/zig/src/Compilation.zig:1301:31: 0x55f3cbc9f47d in Compilation.update (zig1) try self.performAllTheWork(); ^ /home/emekankurumeh/dev/zig/src/main.zig:2007:20: 0x55f3cbc37676 in main.updateModule (zig1) try comp.update(); ^ /home/emekankurumeh/dev/zig/src/main.zig:1848:17: 0x55f3cbb84d7d in main.buildOutputType (zig1) updateModule(gpa, comp, zir_out_path, hook) catch |err| switch (err) { ^ /home/emekankurumeh/dev/zig/src/main.zig:168:31: 0x55f3cbb5bcc6 in main.mainArgs (zig1) return buildOutputType(gpa, arena, args, .zig_test); ^ /home/emekankurumeh/dev/zig/src/stage1.zig:45:24: 0x55f3cbb5b4de in main (zig1) stage2.mainArgs(gpa, arena, args) catch unreachable; ^ The following command terminated unexpectedly: /home/emekankurumeh/dev/zig/build/bin/zig test /home/emekankurumeh/dev/xzb/src/main.zig --cache-dir /home/emekankurumeh/dev/xzb/zig-cache --global-cache-dir /home/emekankurumeh/.cache/zig --name test error: the following build command failed with exit code 1: /home/emekankurumeh/dev/xzb/zig-cache/o/22c50f17c33a54a18fceb94ffeee4669/build /home/emekankurumeh/dev/zig/build/bin/zig /home/emekankurumeh/dev/xzb /home/emekankurumeh/dev/xzb/zig-cache /home/emekankurumeh/.cache/zig test ```