Rollup merge of #68669 - euclio:doc-comment-stmt, r=estebank

suggest adding space in accidental doc comments

Fixes #67553.

r? @estebank

2 files changed, 70 insertions, 0 deletions

diff --git a/src/test/ui/parser/doc-comment-in-stmt.rs b/src/test/ui/parser/doc-comment-in-stmt.rs
new file mode 100644
index 00000000000..b02df13213f
--- /dev/null
+++ b/src/test/ui/parser/doc-comment-in-stmt.rs
@@ -0,0 +1,20 @@
+fn foo() -> bool {
+    false
+    //!self.allow_ty_infer()
+    //~^ ERROR found doc comment
+}
+
+fn bar() -> bool {
+    false
+    /*! bar */ //~ ERROR found doc comment
+}
+
+fn baz() -> i32 {
+    1 /** baz */ //~ ERROR found doc comment
+}
+
+fn quux() -> i32 {
+    2 /*! quux */ //~ ERROR found doc comment
+}
+
+fn main() {}
diff --git a/src/test/ui/parser/doc-comment-in-stmt.stderr b/src/test/ui/parser/doc-comment-in-stmt.stderr
new file mode 100644
index 00000000000..5d94d6fe69b
--- /dev/null
+++ b/src/test/ui/parser/doc-comment-in-stmt.stderr
@@ -0,0 +1,50 @@
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found doc comment `//!self.allow_ty_infer()`
+  --> $DIR/doc-comment-in-stmt.rs:3:5
+   |
+LL |     false
+   |          - expected one of `.`, `;`, `?`, `}`, or an operator
+LL |     //!self.allow_ty_infer()
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^ unexpected token
+   |
+help: add a space before `!` to use a regular comment
+   |
+LL |     // !self.allow_ty_infer()
+   |     ^^^^
+
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found doc comment `/*! bar */`
+  --> $DIR/doc-comment-in-stmt.rs:9:5
+   |
+LL |     false
+   |          - expected one of `.`, `;`, `?`, `}`, or an operator
+LL |     /*! bar */
+   |     ^^^^^^^^^^ unexpected token
+   |
+help: add a space before `!` to use a regular comment
+   |
+LL |     /* ! bar */
+   |     ^^^^
+
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found doc comment `/** baz */`
+  --> $DIR/doc-comment-in-stmt.rs:13:7
+   |
+LL |     1 /** baz */
+   |       ^^^^^^^^^^ expected one of `.`, `;`, `?`, `}`, or an operator
+   |
+help: add a space before `*` to use a regular comment
+   |
+LL |     1 /* * baz */
+   |       ^^^^
+
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found doc comment `/*! quux */`
+  --> $DIR/doc-comment-in-stmt.rs:17:7
+   |
+LL |     2 /*! quux */
+   |       ^^^^^^^^^^^ expected one of `.`, `;`, `?`, `}`, or an operator
+   |
+help: add a space before `!` to use a regular comment
+   |
+LL |     2 /* ! quux */
+   |       ^^^^
+
+error: aborting due to 4 previous errors
+