Unintuitive error for omitting field type in struct

[kiedtl]

Zig Version

0.14.0-dev.3446+50b40c962

Steps to Reproduce and Observed Output

const S = struct { a: usize = 1, b = 2, c: isize = 3, d: []const u8 };

yields

test.zig:1:20: error: tuple field has a name
const S = struct { a: usize = 1, b = 2, c: isize = 3, d: []const u8 };

Expected Output

This is an extremely confusing error message, particularly so as the error points to the first field rather than the offending one. In a large struct (where I encountered this error), the field with a missing type was 30-something lines down.

As suggested in Discord, the compiler could output a note: "note: struct is a tuple due to this unnamed field".

Personally, I would prefer the error message be changed. I'm not familiar with the compiler internals, though, so I don't know which would be easier or require a refactor.

[rohlem]

duplicate of #14334