rustdoc: check code block syntax in early pass

1 files changed, 60 insertions, 1 deletions

diff --git a/src/test/rustdoc-ui/invalid-syntax.rs b/src/test/rustdoc-ui/invalid-syntax.rs
index 537816be8d7..924e0386d31 100644
--- a/src/test/rustdoc-ui/invalid-syntax.rs
+++ b/src/test/rustdoc-ui/invalid-syntax.rs
@@ -1,7 +1,66 @@
 // compile-pass
-// compile-flags: --error-format=human
 
 /// ```
 /// \__________pkt->size___________/          \_result->size_/ \__pkt->size__/
 /// ```
 pub fn foo() {}
+
+/// ```
+///    |
+/// LL | use foobar::Baz;
+///    |     ^^^^^^ did you mean `baz::foobar`?
+/// ```
+pub fn bar() {}
+
+/// ```
+/// valid
+/// ```
+///
+/// ```
+/// \_
+/// ```
+///
+/// ```text
+/// "invalid
+/// ```
+pub fn valid_and_invalid() {}
+
+/// This is a normal doc comment, but...
+///
+/// There's a code block with bad syntax in it:
+///
+/// ```rust
+/// \_
+/// ```
+///
+/// Good thing we tested it!
+pub fn baz() {}
+
+/// Indented block start
+///
+///     code with bad syntax
+///     \_
+///
+/// Indented block end
+pub fn quux() {}
+
+/// Unclosed fence
+///
+/// ```
+/// slkdjf
+pub fn xyzzy() {}
+
+/// Indented code that contains a fence
+///
+///     ```
+pub fn blah() {}
+
+/// ```edition2018
+/// \_
+/// ```
+pub fn blargh() {}
+
+#[doc = "```"]
+/// \_
+#[doc = "```"]
+pub fn crazy_attrs() {}