rustc: Hash the CMH into symbol names

Author: brson

src/rustc/back/link.rs

@@ -420,8 +420,7 @@ fn symbol_hash(tcx: ty::ctxt, sha: sha1, t: ty::t, link_meta: link_meta) ->
     sha.reset();
     sha.input_str(link_meta.name);
     sha.input_str("-");
-    // FIXME: This wants to be link_meta.meta_hash
-    sha.input_str(link_meta.name);
+    sha.input_str(link_meta.extras_hash);
     sha.input_str("-");
     sha.input_str(encoder::encoded_ty(tcx, t));
     let hash = truncated_sha1_result(sha);

src/test/auxiliary/crateresolve6-1.rs

@@ -0,0 +1,7 @@
+#[link(name = "crateresolve6",
+       vers = "0.1",
+       calories = "100")];
+
+#[crate_type = "lib"];
+
+fn f() -> int { 100 }

src/test/auxiliary/crateresolve6-2.rs

@@ -0,0 +1,7 @@
+#[link(name = "crateresolve6",
+       vers = "0.1",
+       calories = "200")];
+
+#[crate_type = "lib"];
+
+fn f() -> int { 200 }

src/test/run-pass/crateresolve6.rs

@@ -0,0 +1,13 @@
+// xfail-fast
+// aux-build:crateresolve6-1.rs
+// aux-build:crateresolve6-2.rs
+// error-pattern:mismatched types
+
+// These both have the same version but differ in other metadata
+use cr6_1 (name = "crateresolve6", vers = "0.1", calories="100");
+use cr6_2 (name = "crateresolve6", vers = "0.1", calories="200");
+
+fn main() {
+    assert cr6_1::f() == 100;
+    assert cr6_2::f() == 200;
+}