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Do not segfault in svd(a) with VT.size > INT_MAX #20349

Merged
merged 2 commits into from Mar 28, 2024
Merged

Do not segfault in svd(a) with VT.size > INT_MAX #20349

merged 2 commits into from Mar 28, 2024

Commits on Mar 28, 2024

  1. BUG: linalg: avoid a segfault in ?gesdd 

    linalg.svd with too large matrices may segfault if
max(m, n)*max(m, n) > int_max on large-memory machines (on smaller memory machines
it may fail with a MemoryError instead). The root cause is an integer overflow
in indexing 2D arrays, deep in the LAPACK code.
Thus, detect a possible error condition and bail out early.
    @ev-br
    ev-br committed Mar 28, 2024
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  2. Update scipy/linalg/_decomp_svd.py 

    Co-authored-by: Pearu Peterson <pearu.peterson@gmail.com>
    @ev-br @pearu
    ev-br and pearu committed Mar 28, 2024
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