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[Compressed Storage] Use smaller type of Index & StorageIndex for determining maximum size during resize.

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This commit is contained in:
Andreas Forster 2024-01-22 00:35:31 +00:00 committed by Charles Schlosser
parent 772057c558
commit eede526b7c
1 changed files with 6 additions and 1 deletions
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7
Eigen/src/SparseCore/CompressedStorage.h
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@ -71,8 +71,13 @@ class CompressedStorage {
void resize(Index size, double reserveSizeFactor = 0) { void resize(Index size, double reserveSizeFactor = 0) {
if (m_allocatedSize < size) { if (m_allocatedSize < size) {
// Avoid underflow on the std::min<Index> call by choosing the smaller index type.
using SmallerIndexType =
typename std::conditional<static_cast<size_t>((std::numeric_limits<Index>::max)()) <
static_cast<size_t>((std::numeric_limits<StorageIndex>::max)()),
Index, StorageIndex>::type;
Index realloc_size = Index realloc_size =
(std::min<Index>)(NumTraits<StorageIndex>::highest(), size + Index(reserveSizeFactor * double(size))); (std::min<Index>)(NumTraits<SmallerIndexType>::highest(), size + Index(reserveSizeFactor * double(size)));
if (realloc_size < size) internal::throw_std_bad_alloc(); if (realloc_size < size) internal::throw_std_bad_alloc();
reallocate(realloc_size); reallocate(realloc_size);
} }