From c172e7aa30a820a11afbbed180115b81e2ea1411 Mon Sep 17 00:00:00 2001
From: Mike Pall <mike>
Date: Tue, 17 Jul 2012 21:45:49 +0200
Subject: [PATCH] Workaround for MSVC conversion bug (double -> uint32_t ->
 int32_t).

---
 src/lj_opt_fold.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/lj_opt_fold.c b/src/lj_opt_fold.c
index aa80a6aa..e4818a92 100644
--- a/src/lj_opt_fold.c
+++ b/src/lj_opt_fold.c
@@ -627,7 +627,14 @@ LJFOLD(CONV KNUM IRCONV_U32_NUM)
 LJFOLDF(kfold_conv_knum_u32_num)
 {
   lua_assert((fins->op2 & IRCONV_TRUNC));
+#ifdef _MSC_VER
+  {  /* Workaround for MSVC bug. */
+    volatile uint32_t u = (uint32_t)knumleft;
+    return INTFOLD((int32_t)u);
+  }
+#else
   return INTFOLD((int32_t)(uint32_t)knumleft);
+#endif
 }
 
 LJFOLD(CONV KNUM IRCONV_I64_NUM)