extern struct created at comptime results in "unable to evaluate comptime expression"

[Jarred-Sumner]

Zig Version

0.11.0-dev.2571+31738de28

Steps to Reproduce and Observed Behavior

Code:

const std = @import("std");

const ___tracy_source_location_data = extern struct {
    name: ?[*:0]const u8,
    function: [*:0]const u8,
    file: [*:0]const u8,
    line: u32,
    color: u32,
};

pub inline fn traceNamed(comptime src: std.builtin.SourceLocation, comptime name: [*:0]const u8) Ctx {
    const holder = struct {
        pub const data: ___tracy_source_location_data = ___tracy_source_location_data{
            .name = name,
            .function = src.fn_name.ptr,
            .file = src.file.ptr,
            .line = src.line,
            .color = 0,
        };
    };
    return ___tracy_emit_zone_begin(&holder.data, 1);
}

pub fn main() anyerror!void {
    const ctx = traceNamed(@src(), "main");
    _ = ctx.id;
}

extern fn ___tracy_emit_zone_begin(data: *const ___tracy_source_location_data, depth: u32) Ctx;

pub const Ctx = extern struct {
    id: u64 = 0,
};

zig build-exe ./repro.zig

Message:

repro.zig:13:86: error: unable to evaluate comptime expression
        pub const data: ___tracy_source_location_data = ___tracy_source_location_data{
                                                        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
referenced by:
    traceNamed: /Users/jarred/Desktop/repro.zig:21:44
    main: /Users/jarred/Desktop/repro.zig:25:17
    remaining

Expected Behavior

No error

[leecannon]

This is caused by @src().line not being compile time known. #13315 (comment)