Do not emit structured suggestion for turbofish with wrong span

Fix #79161.

2 files changed, 14 insertions, 0 deletions

diff --git a/src/test/ui/parser/nested-bad-turbofish.rs b/src/test/ui/parser/nested-bad-turbofish.rs
new file mode 100644
index 00000000000..02099fde212
--- /dev/null
+++ b/src/test/ui/parser/nested-bad-turbofish.rs
@@ -0,0 +1,3 @@
+fn main() {
+    foo<<S as T>::V>(); //~ ERROR
+}
diff --git a/src/test/ui/parser/nested-bad-turbofish.stderr b/src/test/ui/parser/nested-bad-turbofish.stderr
new file mode 100644
index 00000000000..d82fa80e594
--- /dev/null
+++ b/src/test/ui/parser/nested-bad-turbofish.stderr
@@ -0,0 +1,11 @@
+error: comparison operators cannot be chained
+  --> $DIR/nested-bad-turbofish.rs:2:16
+   |
+LL |     foo<<S as T>::V>();
+   |                ^   ^
+   |
+   = help: use `::<...>` instead of `<...>` to specify lifetime, type, or const arguments
+   = help: or use `(...)` if you meant to specify fn arguments
+
+error: aborting due to previous error
+