compiler crash when taking address of comptime value

[xxxbxxx]

Zig Version

0.14.0-dev.2578+ec60156f1

Steps to Reproduce and Observed Behavior

(I guess it's a dupe, but wasn't able to find the other report)

fn compute(x: u8) u32 {
    const table: []const u32 = comptime table: {
        var t: [128]u32 = undefined;
        t['1'] = 123;  // can be removed, still crashes
        break :table &t;
    };
    return table[x];
}

const std = @import("std");
test {
    try std.testing.expectEqual(123, compute('1'));
}

crashes both with zig-out/bin/zig test repro.zig -fno-llvm and zig-out/bin/zig test repro.zig.
also crashes with zig 0.13.0.

thread 146390 panic: reached unreachable code
/var/home/xavier/src/zig/zig/src/codegen.zig:679:56: 0x229d2e0 in lowerPtr (zig)
        .arr_elem, .comptime_field, .comptime_alloc => unreachable,
                                                       ^
/var/home/xavier/src/zig/zig/src/codegen.zig:330:37: 0x1e8b9e4 in generateSymbol (zig)
        .ptr => switch (try lowerPtr(bin_file, pt, src_loc, val.toIntern(), code, reloc_parent, 0)) {
                                    ^
/var/home/xavier/src/zig/zig/src/codegen.zig:335:39: 0x1e8ba69 in generateSymbol (zig)
            switch (try generateSymbol(bin_file, pt, src_loc, Value.fromInterned(slice.ptr), code, reloc_parent)) {
                                      ^
/var/home/xavier/src/zig/zig/src/link/Elf/ZigObject.zig:1741:43: 0x22fea71 in lowerConst (zig)
    const res = try codegen.generateSymbol(
                                          ^
/var/home/xavier/src/zig/zig/src/link/Elf/ZigObject.zig:1030:32: 0x22fff18 in lowerUav (zig)
    const res = self.lowerConst(
                               ^
/var/home/xavier/src/zig/zig/src/link/Elf.zig:529:42: 0x2b7ad5c in lowerUav (zig)
    return self.zigObjectPtr().?.lowerUav(self, pt, uav, explicit_alignment, src_loc);
                                         ^
/var/home/xavier/src/zig/zig/src/link.zig:965:80: 0x2b7d1ab in lowerUav (zig)
                return @as(*tag.Type(), @fieldParentPtr("base", base)).lowerUav(pt, decl_val, decl_align, src_loc);
                                                                               ^
/var/home/xavier/src/zig/zig/src/codegen.zig:1041:23: 0x3338c17 in genTypedValue (zig)
    return lf.lowerUav(pt, val.toIntern(), .none, src_loc);
                      ^
/var/home/xavier/src/zig/zig/src/arch/x86_64/CodeGen.zig:19266:45: 0x305003f in genTypedValue (zig)
    return switch (try codegen.genTypedValue(self.bin_file, pt, self.src_loc, val, self.target.*)) {
                                            ^
/var/home/xavier/src/zig/zig/src/arch/x86_64/CodeGen.zig:19199:53: 0x304e1d0 in resolveInst (zig)
            const const_mcv = try self.genTypedValue(Value.fromInterned(ip_index));
                                                    ^
/var/home/xavier/src/zig/zig/src/arch/x86_64/CodeGen.zig:5936:43: 0x3bede0b in genSliceElemPtr (zig)
    const slice_mcv = try self.resolveInst(lhs);
                                          ^
/var/home/xavier/src/zig/zig/src/arch/x86_64/CodeGen.zig:5980:50: 0x3bee8e3 in airSliceElemVal (zig)
        const elem_ptr = try self.genSliceElemPtr(bin_op.lhs, bin_op.rhs);
                                                 ^
/var/home/xavier/src/zig/zig/src/arch/x86_64/CodeGen.zig:2464:61: 0x389fbf3 in genBody (zig)
            .slice_elem_val      => try self.airSliceElemVal(inst),
                                                            ^
/var/home/xavier/src/zig/zig/src/arch/x86_64/CodeGen.zig:2098:25: 0x34b2cf9 in gen (zig)
        try self.genBody(self.air.getMainBody());
                        ^
/var/home/xavier/src/zig/zig/src/arch/x86_64/CodeGen.zig:928:17: 0x31f681d in generate (zig)
    function.gen() catch |err| switch (err) {
                ^
/var/home/xavier/src/zig/zig/src/codegen.zig:81:51: 0x2df1b1a in generateFunction (zig)
            return importBackend(backend).generate(lf, pt, src_loc, func_index, air, liveness, code, debug_output);
                                                  ^
/var/home/xavier/src/zig/zig/src/link/Elf/ZigObject.zig:1431:45: 0x2df2b0c in updateFunc (zig)
    const res = try codegen.generateFunction(
                                            ^
/var/home/xavier/src/zig/zig/src/link/Elf.zig:2333:44: 0x2df43ea in updateFunc (zig)
    return self.zigObjectPtr().?.updateFunc(self, pt, func_index, air, liveness);
                                           ^
/var/home/xavier/src/zig/zig/src/link.zig:725:82: 0x29f8bc6 in updateFunc (zig)
                return @as(*tag.Type(), @fieldParentPtr("base", base)).updateFunc(pt, func_index, air, liveness);
                                                                                 ^
/var/home/xavier/src/zig/zig/src/Zcu/PerThread.zig:1550:22: 0x2600e7c in linkerUpdateFunc (zig)
        lf.updateFunc(pt, func_index, air, liveness) catch |err| switch (err) {
                     ^
/var/home/xavier/src/zig/zig/src/link.zig:1550:32: 0x21f947e in doTask (zig)
            pt.linkerUpdateFunc(func.func, func.air) catch |err| switch (err) {
                               ^
/var/home/xavier/src/zig/zig/src/link.zig:1381:34: 0x1e14910 in flushTaskQueue (zig)
        for (tasks) |task| doTask(comp, tid, task);
                                 ^
/var/home/xavier/src/zig/zig/lib/std/Thread/Pool.zig:178:50: 0x1e14991 in runFn (zig)
            @call(.auto, func, .{id.?} ++ closure.arguments);
                                                 ^
/var/home/xavier/src/zig/zig/lib/std/Thread/Pool.zig:291:32: 0x1dc826d in worker (zig)
            run_node.data.runFn(&run_node.data, id);
                               ^
/var/home/xavier/src/zig/zig/lib/std/Thread.zig:486:13: 0x1baae9a in callFn__anon_178150 (zig)
            @call(.auto, f, args);
            ^
/var/home/xavier/src/zig/zig/lib/std/Thread.zig:755:30: 0x19de302 in entryFn (zig)
                return callFn(f, args_ptr.*);

with llvm:

thread 147705 panic: reached unreachable code
/var/home/xavier/src/zig/zig/src/codegen/llvm.zig:4484:60: 0x1eb5da5 in lowerPtr (zig)
            .arr_elem, .comptime_field, .comptime_alloc => unreachable,
                                                           ^
/var/home/xavier/src/zig/zig/src/codegen/llvm.zig:4025:35: 0x1c08de3 in lowerValue (zig)
            .ptr => try o.lowerPtr(arg_val, 0),
                                  ^
/var/home/xavier/src/zig/zig/src/codegen/llvm.zig:4027:33: 0x1c0a8e6 in lowerValue (zig)
                try o.lowerValue(slice.ptr),
                                ^
/var/home/xavier/src/zig/zig/src/codegen/llvm.zig:5018:42: 0x2dfff81 in resolveValue (zig)
        const llvm_val = try o.lowerValue(val.toIntern());
                                         ^
/var/home/xavier/src/zig/zig/src/codegen/llvm.zig:5009:47: 0x2dffd1f in resolveInst (zig)
        const llvm_val = try self.resolveValue((try self.air.value(inst, self.ng.object.pt)).?);
                                              ^
/var/home/xavier/src/zig/zig/src/codegen/llvm.zig:7041:43: 0x2e5c291 in airSliceElemVal (zig)
        const slice = try self.resolveInst(bin_op.lhs);
                                          ^
/var/home/xavier/src/zig/zig/src/codegen/llvm.zig:5262:64: 0x29f6224 in genBody (zig)
                .slice_elem_val     => try self.airSliceElemVal(body[i..]),
                                                               ^
/var/home/xavier/src/zig/zig/src/codegen/llvm.zig:1764:19: 0x29ed650 in updateFunc (zig)
        fg.genBody(air.getMainBody(), .poi) catch |err| switch (err) {
                  ^
/var/home/xavier/src/zig/zig/src/link/Elf.zig:2332:70: 0x2df4394 in updateFunc (zig)
    if (self.llvm_object) |llvm_object| return llvm_object.updateFunc(pt, func_index, air, liveness);
                                                                     ^
/var/home/xavier/src/zig/zig/src/link.zig:725:82: 0x29f8bc6 in updateFunc (zig)
                return @as(*tag.Type(), @fieldParentPtr("base", base)).updateFunc(pt, func_index, air, liveness);

Expected Behavior

working code or error message