From 37c05b71299ec00bd2679c3df22fb6ca0cd0e371 Mon Sep 17 00:00:00 2001
From: Emilio Cobos Álvarez <ecoal95@gmail.com>
Date: Sun, 13 Nov 2016 12:31:23 +0100
Subject: codegen: Special-case i64::MIN since it produces a overflow on aster.

Proper fix on aster soon, still worth to get this in I guess.

r? @fitzgen
---
 src/codegen/helpers.rs | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'src/codegen/helpers.rs')

diff --git a/src/codegen/helpers.rs b/src/codegen/helpers.rs
index 016ba478..6e5a6f0e 100644
--- a/src/codegen/helpers.rs
+++ b/src/codegen/helpers.rs
@@ -117,4 +117,19 @@ pub mod ast_ty {
             }
         }
     }
+
+    pub fn int_expr(val: i64) -> P<ast::Expr> {
+        use std::i64;
+        let expr = aster::AstBuilder::new().expr();
+
+        // This is not representable as an i64 if it's negative, so we
+        // special-case it.
+        //
+        // Fix in aster incoming.
+        if val == i64::MIN {
+            expr.neg().uint(1u64 << 63)
+        } else {
+            expr.int(val)
+        }
+    }
 }
-- 
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