SPARC NCG: When getting a 64 bit word, promote halves to 64 bit before shifting

diff --git a/rts/RtsAPI.c b/rts/RtsAPI.c
index e0740b1..a499d65 100644 (file)
--- a/rts/RtsAPI.c
+++ b/rts/RtsAPI.c
@@ -307,7 +307,7 @@ rts_getInt64 (HaskellObj p)
     //        p->header.info == I64zh_static_info);
     tmp = (HsInt32*)&(UNTAG_CLOSURE(p)->payload[0]);
 
-    HsInt64 i  = (HsInt64)(tmp[0] << 32) | (HsInt64)tmp[1];
+    HsInt64 i  = (HsInt64)((HsInt64)(tmp[0]) << 32) | (HsInt64)tmp[1];
     return i;
 }