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Fix ulp_accuracy crashes in Release builds

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libeigen/eigen!2381

Co-authored-by: Rasmus Munk Larsen <rmlarsen@gmail.com>
This commit is contained in:
Rasmus Munk Larsen
2026-04-02 20:12:13 -07:00
parent e315a8cdd0
commit 60df12437e
1 changed files with 5 additions and 5 deletions
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10
test/ulp_accuracy/ulp_accuracy.cpp
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@@ -84,7 +84,7 @@ static inline int64_t signed_ulp_error(Scalar eigen_val, Scalar ref_val) {
// ============================================================================
template <typename Scalar>
struct alignas(128) ThreadResult {
struct ThreadResult {
int64_t max_abs_ulp = 0;
Scalar max_ulp_at = Scalar(0);
Scalar max_ulp_eigen = Scalar(0);
@@ -343,11 +343,11 @@ static void worker(const FuncEntry<Scalar>& func, Scalar lo, Scalar hi, int batc
x = (next > hi) ? hi : next;
}
// Process remaining partial batch.
// Process remaining partial batch. Pad unused slots with the last valid
// input so the full-size vectorized eval doesn't read uninitialized memory.
if (idx > 0) {
auto partial_in = input.head(idx);
auto partial_eigen = eigen_out.head(idx);
func.eigen_eval(partial_eigen, partial_in);
for (int i = idx; i < batch_size; i++) input[i] = input[idx - 1];
func.eigen_eval(eigen_out, input);
process_batch(idx, input, eigen_out);
}