Files
rust/tests/ui/parser/issues
Chris Denton 8089e317b5 Rollup merge of #139921 - Kivooeo:master, r=WaffleLapkin
improve diagnostic for raw pointer field access with ->

This PR enhances the error messages emitted by the Rust compiler when users attempt to use the `->` operator for field access on raw pointers or when dereferencing is needed. The changes aim to provide clearer guidance, by suggesting the correct use of the `.` operator and explicit dereferencing.

**Before:**
```
help: `xs` is a raw pointer; try dereferencing it
   |
LL |         (*xs)->count += 1;
   |         ++  +
```

**Now:**
```
help: use `.` on a dereferenced raw pointer instead
   |
LL -         xs->count += 1;
LL +         (*xs).count += 1;
   |
```

I added extra clarification in the message. Since this error occurs in the parser, we can't be certain that the type is a raw pointer. That's why the message includes only a small note in brackets. (In contrast, the message above is emitted in HIR, where we *can* check whether it's a raw pointer.)

**Before:**
```
  --> main.rs:11:11
   |
11 |         xs->count += 1;
   |           ^^
   |
   = help: the . operator will dereference the value if needed
```
**After:**
```
--> main.rs:11:11
   |
11 |         xs->count += 1;
   |           ^^
   |
   = help: the `.` operator will automatically dereference the value, except if the value is a raw pointer
```
2025-04-22 15:24:05 +00:00
..
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2024-07-12 03:22:32 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2024-06-21 19:00:18 -04:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2025-01-23 06:01:36 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2024-11-29 06:10:15 +11:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-08-01 23:30:40 +08:00
2023-08-01 23:30:40 +08:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-05-02 22:36:24 +00:00
2023-05-02 22:36:24 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-10-24 21:27:05 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-05-01 16:15:13 +08:00
2023-01-11 09:32:08 +00:00
2023-10-24 21:27:05 +00:00
2023-10-24 21:27:05 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-10-24 21:27:05 +00:00
2023-01-11 09:32:08 +00:00
2023-10-24 21:27:05 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-10-24 21:27:05 +00:00
2023-10-24 21:27:05 +00:00
2023-10-24 21:27:05 +00:00
2023-10-24 21:27:05 +00:00
2023-10-24 21:27:05 +00:00
2023-10-24 21:27:05 +00:00
2023-01-26 10:52:57 +08:00
2023-01-11 09:32:08 +00:00
2024-11-24 19:42:33 +01:00
2024-11-24 19:42:33 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-10-24 21:27:05 +00:00
2023-10-24 21:27:05 +00:00
2023-01-11 09:32:08 +00:00
2023-10-24 21:27:05 +00:00
2023-05-01 16:15:13 +08:00
2023-05-01 16:15:13 +08:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-10-24 21:27:05 +00:00
2023-10-24 21:27:05 +00:00
2023-10-24 21:27:05 +00:00
2023-10-24 21:27:05 +00:00
2024-07-12 03:22:32 +00:00
2023-10-24 21:27:05 +00:00
2023-10-24 21:27:05 +00:00
2023-10-24 21:27:05 +00:00
2023-04-07 08:54:13 +12:00
fmt
2023-05-13 19:40:17 +08:00
2023-10-24 21:27:05 +00:00
2023-10-24 21:27:05 +00:00
2023-12-02 23:47:39 +08:00
2024-01-13 12:46:58 -05:00