5 files changed, 21 insertions, 16 deletions
diff --git a/src/libsyntax/ext/build.rs b/src/libsyntax/ext/build.rs
index 33daefa3e06..5acb84cf852 100644
--- a/src/libsyntax/ext/build.rs
+++ b/src/libsyntax/ext/build.rs
@@ -626,13 +626,13 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
         self.expr(sp, ast::ExprLit(box(GC) respan(sp, lit)))
     }
     fn expr_uint(&self, span: Span, i: uint) -> Gc<ast::Expr> {
-        self.expr_lit(span, ast::LitUint(i as u64, ast::TyU))
+        self.expr_lit(span, ast::LitInt(i as u64, ast::UnsignedIntLit(ast::TyU)))
     }
     fn expr_int(&self, sp: Span, i: int) -> Gc<ast::Expr> {
-        self.expr_lit(sp, ast::LitInt(i as i64, ast::TyI))
+        self.expr_lit(sp, ast::LitInt(i as u64, ast::SignedIntLit(ast::TyI, ast::Sign::new(i))))
     }
     fn expr_u8(&self, sp: Span, u: u8) -> Gc<ast::Expr> {
-        self.expr_lit(sp, ast::LitUint(u as u64, ast::TyU8))
+        self.expr_lit(sp, ast::LitInt(u as u64, ast::UnsignedIntLit(ast::TyU8)))
     }
     fn expr_bool(&self, sp: Span, value: bool) -> Gc<ast::Expr> {
         self.expr_lit(sp, ast::LitBool(value))
diff --git a/src/libsyntax/ext/bytes.rs b/src/libsyntax/ext/bytes.rs
index ce13fa2a7c6..6ea55096348 100644
--- a/src/libsyntax/ext/bytes.rs
+++ b/src/libsyntax/ext/bytes.rs
@@ -47,7 +47,7 @@ pub fn expand_syntax_ext(cx: &mut ExtCtxt, sp: Span, tts: &[ast::TokenTree])
                 }
 
                 // u8 literal, push to vector expression
-                ast::LitUint(v, ast::TyU8) => {
+                ast::LitInt(v, ast::UnsignedIntLit(ast::TyU8)) => {
                     if v > 0xFF {
                         cx.span_err(expr.span, "too large u8 literal in bytes!");
                         err = true;
@@ -57,13 +57,14 @@ pub fn expand_syntax_ext(cx: &mut ExtCtxt, sp: Span, tts: &[ast::TokenTree])
                 }
 
                 // integer literal, push to vector expression
-                ast::LitIntUnsuffixed(v) => {
+                ast::LitInt(_, ast::UnsuffixedIntLit(ast::Minus)) => {
+                    cx.span_err(expr.span, "negative integer literal in bytes!");
+                    err = true;
+                }
+                ast::LitInt(v, ast::UnsuffixedIntLit(ast::Plus)) => {
                     if v > 0xFF {
                         cx.span_err(expr.span, "too large integer literal in bytes!");
                         err = true;
-                    } else if v < 0 {
-                        cx.span_err(expr.span, "negative integer literal in bytes!");
-                        err = true;
                     } else {
                         bytes.push(cx.expr_u8(expr.span, v as u8));
                     }
diff --git a/src/libsyntax/ext/concat.rs b/src/libsyntax/ext/concat.rs
index 670e38327d6..dd1153bf666 100644
--- a/src/libsyntax/ext/concat.rs
+++ b/src/libsyntax/ext/concat.rs
@@ -37,11 +37,14 @@ pub fn expand_syntax_ext(cx: &mut base::ExtCtxt,
                     ast::LitChar(c) => {
                         accumulator.push_char(c);
                     }
-                    ast::LitInt(i, _) | ast::LitIntUnsuffixed(i) => {
+                    ast::LitInt(i, ast::UnsignedIntLit(_)) |
+                    ast::LitInt(i, ast::SignedIntLit(_, ast::Plus)) |
+                    ast::LitInt(i, ast::UnsuffixedIntLit(ast::Plus)) => {
                         accumulator.push_str(format!("{}", i).as_slice());
                     }
-                    ast::LitUint(u, _) => {
-                        accumulator.push_str(format!("{}", u).as_slice());
+                    ast::LitInt(i, ast::SignedIntLit(_, ast::Minus)) |
+                    ast::LitInt(i, ast::UnsuffixedIntLit(ast::Minus)) => {
+                        accumulator.push_str(format!("-{}", i).as_slice());
                     }
                     ast::LitNil => {}
                     ast::LitBool(b) => {
diff --git a/src/libsyntax/ext/deriving/generic/mod.rs b/src/libsyntax/ext/deriving/generic/mod.rs
index 871f277a2da..9225e4414c4 100644
--- a/src/libsyntax/ext/deriving/generic/mod.rs
+++ b/src/libsyntax/ext/deriving/generic/mod.rs
@@ -996,7 +996,7 @@ impl<'a> MethodDef<'a> {
             let arms : Vec<ast::Arm> = variants.iter().enumerate()
                 .map(|(index, &variant)| {
                     let pat = variant_to_pat(cx, sp, &*variant);
-                    let lit = ast::LitUint(index as u64, ast::TyU);
+                    let lit = ast::LitInt(index as u64, ast::UnsignedIntLit(ast::TyU));
                     cx.arm(sp, vec![pat], cx.expr_lit(sp, lit))
                 }).collect();
 
diff --git a/src/libsyntax/ext/quote.rs b/src/libsyntax/ext/quote.rs
index dcfb0198127..cc07b531258 100644
--- a/src/libsyntax/ext/quote.rs
+++ b/src/libsyntax/ext/quote.rs
@@ -189,16 +189,17 @@ pub mod rt {
         (signed, $t:ty, $tag:ident) => (
             impl ToSource for $t {
                 fn to_source(&self) -> String {
-                    let lit = dummy_spanned(ast::LitInt(*self as i64, ast::$tag));
-                    pprust::lit_to_string(&lit)
+                    let lit = ast::LitInt(*self as u64, ast::SignedIntLit(ast::$tag,
+                                                                          ast::Sign::new(*self)));
+                    pprust::lit_to_string(&dummy_spanned(lit))
                 }
             }
         );
         (unsigned, $t:ty, $tag:ident) => (
             impl ToSource for $t {
                 fn to_source(&self) -> String {
-                    let lit = dummy_spanned(ast::LitUint(*self as u64, ast::$tag));
-                    pprust::lit_to_string(&lit)
+                    let lit = ast::LitInt(*self as u64, ast::UnsignedIntLit(ast::$tag));
+                    pprust::lit_to_string(&dummy_spanned(lit))
                 }
             }
         );