add a test case for issue #32031

[dsprenkels]

I propose a test case to finish the fix for issue #32031. Please review this commit thoroughly, as I have never written a codegen test before.

r? @eddyb

[eddyb]

@dsprenkels Can you add the email address you used in the commit to your github account? Otherwise the commits are not linked to your account. This is of course not necessary, let me know if it's intentional.

[eddyb]

Any chance this could also check the return type?

[eddyb]

What I meant, btw, is that the full signature is define float @add_newtype_f32(float, float) - and if you include all of it, you also ensure the return type is correct.

[dsprenkels]

Oh, check. I'll fix this accordingly.

[dsprenkels]

Yup, this was indeed not intentional. Thanks for the heads-up!
(I did this commit on my server, where compilation is a lot faster.)

I also added a check for the return type.

[eddyb]

Is this not double?

[eddyb]

@bors r+ Thanks!

[bors]

📌 Commit 688840f has been approved by eddyb

[bors]

⌛ Testing commit 688840f with merge abc57ab...

[bors]

☀️ Test successful - auto-linux-32-nopt-t, auto-linux-32-opt, auto-linux-32cross-opt, auto-linux-64-cargotest, auto-linux-64-cross-armhf, auto-linux-64-cross-armsf, auto-linux-64-cross-freebsd, auto-linux-64-cross-netbsd, auto-linux-64-debug-opt, auto-linux-64-nopt-t, auto-linux-64-opt, auto-linux-64-opt-mir, auto-linux-64-opt-rustbuild, auto-linux-64-x-android-t, auto-linux-cross-opt, auto-linux-musl-64-opt, auto-mac-32-opt, auto-mac-64-nopt-t, auto-mac-64-opt, auto-mac-64-opt-rustbuild, auto-mac-cross-ios-opt, auto-win-gnu-32-nopt-t, auto-win-gnu-32-opt, auto-win-gnu-32-opt-rustbuild, auto-win-gnu-64-nopt-t, auto-win-gnu-64-opt, auto-win-msvc-32-cross-opt, auto-win-msvc-32-opt, auto-win-msvc-64-cargotest, auto-win-msvc-64-opt, auto-win-msvc-64-opt-mir, auto-win-msvc-64-opt-rustbuild