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Make assume_aligned a no-op on ARM & ARM64 when msan is used, to work around a missing linker symbol.

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(cherry picked from commit 71703a9816)
This commit is contained in:
Rasmus Munk Larsen
2025-11-04 20:26:36 +00:00
committed by Antonio Sanchez
parent f471ebb8cc
commit 99e199f0eb
1 changed files with 7 additions and 0 deletions
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7
Eigen/src/Core/util/Memory.h
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@@ -1354,6 +1354,13 @@ EIGEN_DEVICE_FUNC void destroy_at(T* p) {
}
#endif
// FIXME(rmlarsen): Work around missing linker symbol with msan on ARM.
#if !defined(EIGEN_DONT_ASSUME_ALIGNED) && __has_feature(memory_sanitizer) && \
(EIGEN_ARCH_ARM || EIGEN_ARCH_ARM64)
#define EIGEN_DONT_ASSUME_ALIGNED
#endif
#if !defined(EIGEN_DONT_ASSUME_ALIGNED) && defined(__cpp_lib_assume_aligned) && (__cpp_lib_assume_aligned >= 201811L)
template <std::size_t N, typename T>
EIGEN_STRONG_INLINE EIGEN_DEVICE_FUNC constexpr T* assume_aligned(T* ptr) {