---

yaml
---
r: 38231
b: refs/heads/try
c: a75c0b3
h: refs/heads/master
i:
  38229: 4de4a4e
  38227: 68903d6
  38223: 46fe885
v: v3

Author: catamorphism

[refs]

@@ -2,7 +2,7 @@
 refs/heads/master: 09bb07bed9166105ea961a42b5fff7739ae0d2e9
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
 refs/heads/snap-stage3: eb8fd119c65c67f3b1b8268cc7341c22d39b7b61
-refs/heads/try: 13879d8e9f172de888db91d59ce267d0116d687d
+refs/heads/try: a75c0b3b3210cc842a02b2dc2a9976278ef9c427
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b
 refs/heads/try2: a810c03263670238bccd64cabb12a23a46e3a278

branches/try/src/librustc/middle/ty.rs

@@ -162,10 +162,11 @@ export kind_is_durable;
 export meta_kind, kind_lteq, type_kind, type_kind_ext;
 export operators;
 export type_err, terr_vstore_kind;
-export terr_mismatch, terr_onceness_mismatch;
+export terr_integer_as_char, terr_mismatch, terr_onceness_mismatch;
 export type_err_to_str, note_and_explain_type_err;
 export expected_found;
 export type_needs_drop;
+export type_is_char;
 export type_is_empty;
 export type_is_integral;
 export type_is_numeric;
@@ -714,6 +715,7 @@ enum type_err {
     terr_in_field(@type_err, ast::ident),
     terr_sorts(expected_found<t>),
     terr_self_substs,
+    terr_integer_as_char,
     terr_no_integral_type,
     terr_no_floating_point_type,
 }
@@ -2541,6 +2543,13 @@ fn type_is_integral(ty: t) -> bool {
     }
 }
 
+fn type_is_char(ty: t) -> bool {
+    match get(ty).sty {
+        ty_int(ty_char) => true,
+        _ => false
+    }
+}
+
 fn type_is_fp(ty: t) -> bool {
     match get(ty).sty {
       ty_infer(FloatVar(_)) | ty_float(_) => true,
@@ -3510,6 +3519,10 @@ fn type_err_to_str(cx: ctxt, err: &type_err) -> ~str {
             ~"couldn't determine an appropriate integral type for integer \
               literal"
         }
+        terr_integer_as_char => {
+            ~"integer literals can't be inferred to char type \
+              (try an explicit cast)"
+        }
         terr_no_floating_point_type => {
             ~"couldn't determine an appropriate floating point type for \
               floating point literal"

branches/try/src/librustc/middle/typeck/infer/unify.rs

@@ -366,6 +366,10 @@ impl infer_ctxt {
     }
 
     fn int_var_sub_t(a_id: ty::IntVid, b: ty::t) -> ures {
+        if ty::type_is_char(b) {
+            return Err(ty::terr_integer_as_char);
+        }
+
         assert ty::type_is_integral(b);
 
         let vb = &self.int_var_bindings;

branches/try/src/test/compile-fail/issue-3477.rs

@@ -0,0 +1,3 @@
+fn main() {
+    let _p: char = 100; //~ ERROR mismatched types: expected `char` but found
+}