From d720865fb65d67acffb98d45eb7251d0102e2f9b Mon Sep 17 00:00:00 2001
From: Michael Matz <matz@suse.de>
Date: Mon, 15 Aug 2016 05:19:12 +0200
Subject: Addresses of non-weak symbols are non-zero

Use this fact in some foldings of comparisons.  See testcase.
---
 tccgen.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'tccgen.c')

diff --git a/tccgen.c b/tccgen.c
index be5a8cb..27ea83f 100644
--- a/tccgen.c
+++ b/tccgen.c
@@ -4979,7 +4979,9 @@ static void expr_cond(void)
     expr_lor();
     if (tok == '?') {
         next();
-        if ((vtop->r & (VT_VALMASK | VT_LVAL | VT_SYM)) == VT_CONST) {
+        if ((vtop->r & (VT_VALMASK | VT_LVAL)) == VT_CONST &&
+	    (!(vtop->r & VT_SYM) ||
+	     !(vtop->sym->type.t & VT_WEAK))) {
             int saved_nocode_wanted = nocode_wanted;
             CType boolean;
             int c;
-- 
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