rustdoc: Fix re-exporting primitive types

* Generate links to the primitive type docs for re-exports.
* Don't ICE on cross crate primitive type re-exports.
* Make primitive type re-exports show up cross crate.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/test/rustdoc/auxiliary/primitive-reexport.rs b/src/test/rustdoc/auxiliary/primitive-reexport.rs
new file mode 100644
index 00000000000..b2e9fa43b39
--- /dev/null
+++ b/src/test/rustdoc/auxiliary/primitive-reexport.rs
@@ -0,0 +1,8 @@
+// compile-flags: --emit metadata --crate-type lib --edition 2018
+
+#![crate_name = "foo"]
+
+pub mod bar {
+    pub use bool;
+    pub use char as my_char;
+}