[Octave-bug-tracker] [bug #58905] "Non-real pivot encountered" during make check for ichol

[anonymous]

URL:
  <https://savannah.gnu.org/bugs/?58905>

                 Summary: "Non-real pivot encountered" during make check for
ichol
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Wed 05 Aug 2020 07:08:22 PM UTC
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Unexpected Error or Warning
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
                 Release: dev
         Discussion Lock: Any
        Operating System: GNU/Linux

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Details:

Using Octave dev version (hg id 652a675c0916) on Linux, the attached errors
(excerpt from fntests.log attached) are seen during "make check". From the
documentation, the matrix shouldn't become complex-valued but it does.

This is with *g++ 10.1.0* using these configure options:

export CC="gcc"
export CXX="g++"
export F77="gfortran"
export CFLAGS="-march=znver2 -O3 -pipe"
export CXXFLAGS="$CFLAGS"
export FFLAGS="$CFLAGS"

../configure --enable-largefile --enable-threads=posix --enable-64
--enable-openmp --enable-readline --disable-jit --disable-java --enable-docs
--enable-hg-id


There are NO errors (other than known bugs) when using the g++ *debug*
configure options:

export CC="gcc"
export CXX="g++"
export F77="gfortran"
export CFLAGS="-march=znver2 -pipe -g" 
export CXXFLAGS="$CFLAGS"
export FFLAGS="$CFLAGS"

../configure --enable-largefile --enable-threads=posix --enable-64
--enable-openmp --enable-readline --disable-jit --disable-java --enable-docs
--enable-hg-id


There are NO errors (other than known bugs) when using clang 10.0.0 using the
following options:

export CC="clang"
export CXX="clang++"
export F77="gfortran"
export CFLAGS="-march=znver2 -O3 -pipe"
export CXXFLAGS="$CFLAGS"
export FFLAGS="$CFLAGS"

../configure --enable-largefile --enable-threads=posix --enable-64
--enable-openmp --enable-readline --disable-jit --disable-java --enable-docs
--enable-hg-id


All three build version use the same library versions: SuiteSparse 5.8.1-1 and
OpenBLAS 0.3.10.




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File Attachments:


-------------------------------------------------------
Date: Wed 05 Aug 2020 07:08:22 PM UTC  Name: fntests.log  Size: 8KiB   By:
None

<http://savannah.gnu.org/bugs/download.php?file_id=49636>

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