Update FIXMEs with issue numbers

Author: nikomatsakis

src/librustc/middle/typeck/check/mod.rs

@@ -583,9 +583,7 @@ pub fn check_item(ccx: @mut CrateCtxt, it: @ast::item) {
       ast::item_fn(ref decl, _, _, _, ref body) => {
         let fn_tpt = ty::lookup_item_type(ccx.tcx, ast_util::local_def(it.id));
 
-            // FIXME -- this won't fly for the case where people reference
-            // a lifetime from within a type parameter. That's actually fairly
-            // tricky.
+        // FIXME(#5121) -- won't work for lifetimes that appear in type bounds
         let param_env = ty::construct_parameter_environment(
                 ccx.tcx,
                 None,

src/librustc/middle/typeck/check/regionmanip.rs

@@ -94,15 +94,9 @@ pub fn relate_nested_regions(
         relate_op: &'self fn(ty::Region, ty::Region),
     }
 
-    // FIXME we should define more precisely when a
-    //       region is considered "nested" and take variance into account.
-    //
-    //       I can't decide whether skipping closure parameter types and
-    //       so on is necessary or not. What is the difference, after all,
-    //       between `&'a |&'b T|` and `&'a Fn<&'b T>`? And yet in the
-    //       latter case I'm inclined to think we should probably track
-    //       the relationship (but then again maybe we should just skip
-    //       all such cases until it "proves necessary")
+    // FIXME(#10151) -- Define more precisely when a region is
+    // considered "nested". Consider taking variance into account as
+    // well.
 
     impl<'self> TypeFolder for RegionRelator<'self> {
         fn tcx(&self) -> ty::ctxt {

src/librustc/middle/typeck/collect.rs

@@ -359,7 +359,7 @@ pub fn ensure_trait_methods(ccx: &CrateCtxt,
         let num_trait_type_params = trait_generics.type_param_defs.len();
         ty::Method::new(
             *m_ident,
-            // FIXME -- what about lifetime parameters here?
+            // FIXME(#5121) -- distinguish early vs late lifetime params
             ty_generics(this, m_generics, num_trait_type_params),
             transformed_self_ty,
             fty,
@@ -486,7 +486,7 @@ fn convert_methods(ccx: &CrateCtxt,
         let num_rcvr_type_params = rcvr_generics.ty_params.len();
         ty::Method::new(
             m.ident,
-            // FIXME region param
+            // FIXME(#5121) -- distinguish early vs late lifetime params
             ty_generics(ccx, &m.generics, num_rcvr_type_params),
             transformed_self_ty,
             fty,
@@ -683,7 +683,8 @@ pub fn instantiate_trait_ref(ccx: &CrateCtxt,
      * trait. Fails if the type is a type other than an trait type.
      */
 
-    let rscope = ExplicitRscope; // FIXME
+    // FIXME(#5121) -- distinguish early vs late lifetime params
+    let rscope = ExplicitRscope;
 
     match lookup_def_tcx(ccx.tcx, ast_trait_ref.path.span, ast_trait_ref.ref_id) {
         ast::DefTrait(trait_did) => {

src/libsyntax/print/pprust.rs

@@ -1905,7 +1905,7 @@ pub fn print_meta_item(s: @ps, item: &ast::MetaItem) {
 pub fn print_view_path(s: @ps, vp: &ast::view_path) {
     match vp.node {
       ast::view_path_simple(ident, ref path, _) => {
-            // FIXME can't compare identifiers directly here
+        // FIXME(#6993) can't compare identifiers directly here
         if path.segments.last().identifier.name != ident.name {
             print_ident(s, ident);
             space(s.s);