Trivial fuzz testing fails with Fuzz/WebServer.zig error

[RetroDev256]

Zig Version

0.15.0-dev.847+850655f06

Steps to Reproduce and Observed Behavior

1. Create a new zig project using zig init
2. Drop this in main.zig:

const std = @import("std");

fn toFuzz(_: void, input: []const u8) !void {
    if (std.mem.eql(u8, input, "Hello, World!\n")) {
        return error.SomeUnexpectedError;
    }
}

test "fuzz some code" {
    try std.testing.fuzz({}, toFuzz, .{});
}

3. Run zig build test --fuzz
4. Observe this output:

retrodev@lime ~/repos/Zig/hello_world $ zig build test --fuzz
info: web interface listening at http://127.0.0.1:40173/
info: hint: pass --port 40173 to use this same port next time
thread 28501 panic: start index 1 is larger than end index 0
/home/retrodev/repos/Zig/.zig/0.15.0-dev.847+850655f06/files/lib/std/Build/Fuzz/WebServer.zig:685:17: 0x14162ff in addEntryPoint (std.zig)
        for (pcs[1..], 1..) |elem_addr, i| {
                ^
/home/retrodev/repos/Zig/.zig/0.15.0-dev.847+850655f06/files/lib/std/Build/Fuzz/WebServer.zig:566:56: 0x1376617 in coverageRun (std.zig)
            .entry_point => |entry_point| addEntryPoint(ws, entry_point.coverage_id, entry_point.addr) catch |err| switch (err) {
                                                       ^
/home/retrodev/repos/Zig/.zig/0.15.0-dev.847+850655f06/files/lib/std/Thread.zig:510:13: 0x12fad47 in callFn__anon_74160 (std.zig)
            @call(.auto, f, args);
            ^
/home/retrodev/repos/Zig/.zig/0.15.0-dev.847+850655f06/files/lib/std/Thread.zig:1403:30: 0x1285ef0 in entryFn (std.zig)
                return callFn(f, self.fn_args);
                             ^
/home/retrodev/repos/Zig/.zig/0.15.0-dev.847+850655f06/files/lib/std/os/linux/x86_64.zig:126:5: 0x1247a59 in clone (std.zig)
    asm volatile (
    ^
???:?:?: 0x0 in ??? (???)
error: the following build command crashed:
.zig-cache/o/782496cac440ab2e47c905e17fe48eb3/build /home/retrodev/repos/Zig/.zig/0.15.0-dev.847+850655f06/files/zig /home/retrodev/repos/Zig/.zig/0.15.0-dev.847+850655f06/files/lib /home/retrodev/repos/Zig/hello_world .zig-cache /home/retrodev/.cache/zig --seed 0x308254 -Z91428b6fcec4f69d test --fuzz

Expected Behavior

I expect the fuzz testing to continue as normal. I expect the fuzzer to not crash.

[gooncreeper]

Duplicate of #23423. This now happens since use_llvm = false is the default for x86.