From fb2c34f8cdc59c0bffb0dec444c78c602afcaf6a Mon Sep 17 00:00:00 2001
From: bellard <bellard>
Date: Sat, 28 Oct 2006 14:47:39 +0000
Subject: [PATCH] fixed sign extension in some type conversions (Dave Dodge)

---
 tcc.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tcc.c b/tcc.c
index fdac44c..f6e3bab 100644
--- a/tcc.c
+++ b/tcc.c
@@ -5764,6 +5764,10 @@ void force_charshort_cast(int t)
         bits = 32 - bits;
         vpushi(bits);
         gen_op(TOK_SHL);
+        /* result must be signed or the SAR is converted to an SHL
+           This was not the case when "t" was a signed short
+           and the last value on the stack was an unsigned int */
+        vtop->type.t &= ~VT_UNSIGNED;
         vpushi(bits);
         gen_op(TOK_SAR);
     }