From: Peter Maydell <peter.maydell@linaro.org>
Date: Fri, 21 Jun 2013 13:01:31 +0000 (+0100)
Subject: configure: Add signed*signed check to [u]int128_t test
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=464e3671f9d5c206fa9e2646c81f21ceef7cfb7d;p=qemu.git

configure: Add signed*signed check to [u]int128_t test

clang 3.3 with -fsanitize=undefined will fail to link code containing an
int128_t * int128_t multiply (http://llvm.org/bugs/show_bug.cgi?id=16404)
so add this to our configure test for whether [u]int128_t are usable.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
---

diff --git a/configure b/configure
index bb126e8364..0e0adde410 100755
--- a/configure
+++ b/configure
@@ -3329,6 +3329,7 @@ __uint128_t b;
 int main (void) {
   a = a + b;
   b = a * b;
+  a = a * a;
   return 0;
 }
 EOF