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75145e4759
Closes: https://bugs.gentoo.org/922793 Signed-off-by: Daniel Novomeský <dnovomesky@gmail.com> Closes: https://github.com/gentoo/gentoo/pull/35005 Signed-off-by: Joonas Niilola <juippis@gentoo.org>
30 lines
1.2 KiB
Diff
30 lines
1.2 KiB
Diff
https://github.com/google/highway/issues/1549
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https://github.com/google/highway/commit/45eea15b5488f3e7a15c2c94ac77bd9e99703203
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From 45eea15b5488f3e7a15c2c94ac77bd9e99703203 Mon Sep 17 00:00:00 2001
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From: Mathieu Malaterre <mathieu.malaterre@gmail.com>
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Date: Thu, 5 Oct 2023 08:00:38 +0200
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Subject: [PATCH] Fix UB case with signed overflow, prefer unsigned
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Fixes #1549
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Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110643
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Suggested-by: Andrew Pinski <pinskia@gcc.gnu.org>
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---
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hwy/ops/arm_neon-inl.h | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/hwy/ops/arm_neon-inl.h b/hwy/ops/arm_neon-inl.h
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index 7ac7a10c62..97de46be2e 100644
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--- a/hwy/ops/arm_neon-inl.h
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+++ b/hwy/ops/arm_neon-inl.h
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@@ -4592,7 +4592,7 @@ HWY_API Mask128<T, N> IsNaN(const Vec128<T, N> v) {
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template <typename T, size_t N, HWY_IF_FLOAT(T)>
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HWY_API Mask128<T, N> IsInf(const Vec128<T, N> v) {
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const DFromV<decltype(v)> d;
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- const RebindToSigned<decltype(d)> di;
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+ const RebindToUnsigned<decltype(d)> di;
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const VFromD<decltype(di)> vi = BitCast(di, v);
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// 'Shift left' to clear the sign bit, check for exponent=max and mantissa=0.
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return RebindMask(d, Eq(Add(vi, vi), Set(di, hwy::MaxExponentTimes2<T>())));
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