Rollup merge of #22700 - nick29581:ints_hash, r=alexcrichton

 fmt and hash are pretty straightforward I think. sync is a bit more complex. I thought one or two of the `isize`s ought to be `i32`s, but that would require a bunch of casting (the root cause being the lack of atomics other than isize/usize).

r? @alexcrichton

2 files changed, 5 insertions, 2 deletions

diff --git a/src/libsyntax/ext/build.rs b/src/libsyntax/ext/build.rs
index c79b510ae2d..5d9eeeeda1b 100644
--- a/src/libsyntax/ext/build.rs
+++ b/src/libsyntax/ext/build.rs
@@ -702,6 +702,9 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
         self.expr_lit(sp, ast::LitInt(i as u64, ast::SignedIntLit(ast::TyIs(false),
                                                                   ast::Sign::new(i))))
     }
+    fn expr_u32(&self, sp: Span, u: u32) -> P<ast::Expr> {
+        self.expr_lit(sp, ast::LitInt(u as u64, ast::UnsignedIntLit(ast::TyU32)))
+    }
     fn expr_u8(&self, sp: Span, u: u8) -> P<ast::Expr> {
         self.expr_lit(sp, ast::LitInt(u as u64, ast::UnsignedIntLit(ast::TyU8)))
     }
diff --git a/src/libsyntax/ext/format.rs b/src/libsyntax/ext/format.rs
index 1c2374e31f1..91262556abd 100644
--- a/src/libsyntax/ext/format.rs
+++ b/src/libsyntax/ext/format.rs
@@ -417,7 +417,7 @@ impl<'a, 'b> Context<'a, 'b> {
                     parse::AlignUnknown => align("Unknown"),
                 };
                 let align = self.ecx.expr_path(align);
-                let flags = self.ecx.expr_usize(sp, arg.format.flags);
+                let flags = self.ecx.expr_u32(sp, arg.format.flags);
                 let prec = self.trans_count(arg.format.precision);
                 let width = self.trans_count(arg.format.width);
                 let path = self.ecx.path_global(sp, Context::rtpath(self.ecx, "FormatSpec"));
@@ -610,7 +610,7 @@ impl<'a, 'b> Context<'a, 'b> {
                         ecx.ident_of_std("core"),
                         ecx.ident_of("fmt"),
                         ecx.ident_of("ArgumentV1"),
-                        ecx.ident_of("from_uint")], vec![arg])
+                        ecx.ident_of("from_usize")], vec![arg])
             }
         };