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Segfault in bdsdc! #3396

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andreasnoack opened this issue Jun 14, 2013 · 3 comments
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Segfault in bdsdc! #3396

andreasnoack opened this issue Jun 14, 2013 · 3 comments
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bug Indicates an unexpected problem or unintended behavior

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@andreasnoack
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As noted by @jiahao in the linalg tests eigvals(Bidiagonal) can cause segfault. The error is in the call to xbdsdc and it is only happening when uplo='L'. E.g.

julia> LinAlg.LAPACK.bdsdc!('L','N',randn(5),randn(4))
Segmentation fault: 11

Notice that iwork should have size 8n and not 7n, but that change doesn't solve the problem.

I cannot reproduce the segfault in Fortran.
@ViralBShah
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Seems like this one is an easy fix.

@andreasnoack
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Maybe. @jiahao and I couldn't find it.

@andreasnoack andreasnoack mentioned this issue Jun 23, 2013
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@andreasnoack
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Fixed by d78502d

ViralBShah referenced this issue Jun 23, 2013
@andreasnoack
Make workspace larger in xbdsdc to avoid segfault when uplo='L'.
d78502d
@andreasnoack andreasnoack mentioned this issue Jul 1, 2013
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@andreasnoack @ViralBShah