diff options
Diffstat (limited to 'dev-cpp/highway/files/highway-1.0.7-Fix_UB_case_with_signed_overflow.patch')
-rw-r--r-- | dev-cpp/highway/files/highway-1.0.7-Fix_UB_case_with_signed_overflow.patch | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/dev-cpp/highway/files/highway-1.0.7-Fix_UB_case_with_signed_overflow.patch b/dev-cpp/highway/files/highway-1.0.7-Fix_UB_case_with_signed_overflow.patch new file mode 100644 index 000000000000..814d584e8b3a --- /dev/null +++ b/dev-cpp/highway/files/highway-1.0.7-Fix_UB_case_with_signed_overflow.patch @@ -0,0 +1,29 @@ +https://github.com/google/highway/issues/1549 +https://github.com/google/highway/commit/45eea15b5488f3e7a15c2c94ac77bd9e99703203 + +From 45eea15b5488f3e7a15c2c94ac77bd9e99703203 Mon Sep 17 00:00:00 2001 +From: Mathieu Malaterre <mathieu.malaterre@gmail.com> +Date: Thu, 5 Oct 2023 08:00:38 +0200 +Subject: [PATCH] Fix UB case with signed overflow, prefer unsigned + +Fixes #1549 + +Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110643 +Suggested-by: Andrew Pinski <pinskia@gcc.gnu.org> +--- + hwy/ops/arm_neon-inl.h | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/hwy/ops/arm_neon-inl.h b/hwy/ops/arm_neon-inl.h +index 7ac7a10c62..97de46be2e 100644 +--- a/hwy/ops/arm_neon-inl.h ++++ b/hwy/ops/arm_neon-inl.h +@@ -4592,7 +4592,7 @@ HWY_API Mask128<T, N> IsNaN(const Vec128<T, N> v) { + template <typename T, size_t N, HWY_IF_FLOAT(T)> + HWY_API Mask128<T, N> IsInf(const Vec128<T, N> v) { + const DFromV<decltype(v)> d; +- const RebindToSigned<decltype(d)> di; ++ const RebindToUnsigned<decltype(d)> di; + const VFromD<decltype(di)> vi = BitCast(di, v); + // 'Shift left' to clear the sign bit, check for exponent=max and mantissa=0. + return RebindMask(d, Eq(Add(vi, vi), Set(di, hwy::MaxExponentTimes2<T>()))); |