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Rollup merge of #116400 - estebank:issue-78585, r=WaffleLapkin

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Detect missing `=>` after match guard during parsing

```
error: expected one of `,`, `:`, or `}`, found `.`
  --> $DIR/missing-fat-arrow.rs:25:14
   |
LL |         Some(a) if a.value == b {
   |                               - while parsing this struct
LL |             a.value = 1;
   |             -^ expected one of `,`, `:`, or `}`
   |             |
   |             while parsing this struct field
   |
help: try naming a field
   |
LL |             a: a.value = 1;
   |             ++
help: you might have meant to start a match arm after the match guard
   |
LL |         Some(a) if a.value == b => {
   |                                 ++
```

Fix #78585.
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Jubilee 2023-10-06 16:37:47 -07:00 • committed by GitHub
commit 0d68e416a5
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28 changed files with 225 additions and 41 deletions
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4
compiler/rustc_parse/messages.ftl
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@ -225,6 +225,10 @@ parse_expected_semi_found_str = expected `;`, found `{$token}`
parse_expected_statement_after_outer_attr = expected statement after outer attribute
parse_expected_struct_field = expected one of `,`, `:`, or `{"}"}`, found `{$token}`
.label = expected one of `,`, `:`, or `{"}"}`
.ident_label = while parsing this struct field
parse_expected_trait_in_trait_impl_found_type = expected a trait, found type
parse_extern_crate_name_with_dashes = crate name using dashes are not valid in `extern crate` statements