Add a test for #92481

[albertlarsan68]

The test was copied ad-hoc from #92481, but I can't get the test to pass, because of needing to get twice the same error on the last line of the source.

Closes #92481

[compiler-errors]

It's best to try to minimize these tests, even if they're found via a fuzzer. This one should be possible to write a UI test for, and reproduces the ICE on beta:

fn r({) {
    Ok {
        d..||_=m
    }
}

[albertlarsan68]

Thanks @compiler-errors for the testable test case!

[albertlarsan68]

r? compiler

[TaKO8Ki]

@bors r+ rollup

[bors]

📌 Commit 2315012 has been approved by TaKO8Ki

It is now in the queue for this repository.

[matthiaskrgr]

@bors r- failed in a rollup
#105687

failures:

---- [ui] src/test/ui/typeck/issue-92481.rs stdout ----
diff of stderr:

32	   |
33	LL |         d..||_=m
34	   |         ^ field does not exist
+	  --> $SRC_DIR/core/src/result.rs:LL:COL
35	   |
-	  ::: $SRC_DIR/core/src/result.rs:LL:COL
-	   |
-	LL |     Ok(#[stable(feature = "rust1", since = "1.0.0")] T),
-	   |     -- `Result<_, _>::Ok` defined here
+	   = note: `Result<_, _>::Ok` defined here
40	   |
41	help: `Result<_, _>::Ok` is a tuple variant, use the appropriate syntax
42	   |


The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/typeck/issue-92481/issue-92481.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args typeck/issue-92481.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/typeck/issue-92481.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Zdeduplicate-diagnostics=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/typeck/issue-92481" "-A" "unused" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/typeck/issue-92481/auxiliary"
stdout: none
--- stderr -------------------------------
error: expected parameter name, found `{`
  --> /checkout/src/test/ui/typeck/issue-92481.rs:5:6
   |
LL | fn r({) {
   |      ^ expected parameter name

error: expected one of `,`, `:`, or `}`, found `..`
  --> /checkout/src/test/ui/typeck/issue-92481.rs:5:6
   |
LL | fn r({) {
   |      ^ unclosed delimiter
LL |     Ok {             //~ ERROR mismatched types [E0308]
LL |         d..||_=m
   |          -^
   |          |
   |          help: `}` may belong here

error[E0425]: cannot find value `d` in this scope
  --> /checkout/src/test/ui/typeck/issue-92481.rs:7:9
   |
LL |         d..||_=m
   |         ^ not found in this scope
Some tests failed in compiletest suite=ui mode=ui host=x86_64-unknown-linux-gnu target=x86_64-unknown-linux-gnu

error[E0425]: cannot find value `m` in this scope
  --> /checkout/src/test/ui/typeck/issue-92481.rs:7:16
   |
LL |         d..||_=m
   |                ^ not found in this scope

error[E0559]: variant `Result<_, _>::Ok` has no field named `d`
  --> /checkout/src/test/ui/typeck/issue-92481.rs:7:9
   |
LL |         d..||_=m
   |         ^ field does not exist
  --> /rustc/FAKE_PREFIX/library/core/src/result.rs:508:5
   |
   = note: `Result<_, _>::Ok` defined here
   |
help: `Result<_, _>::Ok` is a tuple variant, use the appropriate syntax
   |
LL |     Result<_, _>::Ok(/* fields */)
   |

error[E0308]: mismatched types
  --> /checkout/src/test/ui/typeck/issue-92481.rs:6:5
   |
LL |   fn r({) {
   |           - help: a return type might be missing here: `-> _`
LL | /     Ok {             //~ ERROR mismatched types [E0308]
LL | |         d..||_=m
LL | |     }
   | |_____^ expected `()`, found enum `Result`
   |
   = note: expected unit type `()`
                   found enum `Result<_, _>`

error: aborting due to 6 previous errors

Some errors have detailed explanations: E0308, E0425, E0559.
For more information about an error, try `rustc --explain E0308`.
------------------------------------------



failures:
    [ui] src/test/ui/typeck/issue-92481.rs

test result: FAILED. 13860 passed; 1 failed; 135 ignored; 0 measured; 0 filtered out; finished in 132.58s

[albertlarsan68]

Rebased and re-blessed, so @rustbot ready now.

[TaKO8Ki]

@bors r+ rollup

[bors]

📌 Commit f7db4f0 has been approved by TaKO8Ki

It is now in the queue for this repository.