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

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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>
This commit is contained in:
Peter Maydell 2013-06-21 14:01:31 +01:00 • committed by Michael Tokarev
parent 965f486c21
commit 464e3671f9
1 changed files with 1 additions and 0 deletions
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configure vendored
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@ -3329,6 +3329,7 @@ __uint128_t b;
int main (void) { int main (void) {
a = a + b; a = a + b;
b = a * b; b = a * b;
a = a * a;
return 0; return 0;
} }
EOF EOF