Unintuitive error message when mis-calling builtin functions

[kiedtl]

Zig Version

0.14.0-dev.3452+0367d684f

Steps to Reproduce and Observed Output

When passing an enum literal to a builtin function that takes a []const u8, the resulting error message assumes the enum literal is a decl literal.

const foo = struct {
    bar: []const u8,
};

pub fn baz(_: @FieldType(foo, .bar)) void {}

pub fn main() void {
    baz("hi");
}

yields:

test.zig:5:32: error: type '[]const u8' has no members
pub fn baz(_: @FieldType(foo, .bar)) void {}
                              ~^~~
test.zig:5:32: note: slice values have 'len' and 'ptr' members

Here, the problem is that @FieldType takes a comptime string, not an enum literal as std.meta.fieldInfo did.

Another example that yields the same error message:

const foo = struct { bar: usize };

pub fn main() void {
    _ = @field(foo, .bar);
}

Expected Output

The error can be simplified to some variation of Expected a comptime []const u8; found an enum literal.

If this is too difficult, a note can be added instead: @<builtin> takes a comptime []const u8, not an enum literal.