[Buildroot] [Bug 11991] New: [numpy] segfault when compiling for RPi3 64bits

[Buildroot] [Bug 11991] New: [numpy] segfault when compiling for RPi3 64bits

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=11991

            Bug ID: 11991
           Summary: [numpy] segfault when compiling for RPi3 64bits
           Product: buildroot
           Version: 2019.05
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P5
         Component: Other
          Assignee: unassigned at buildroot.uclibc.org
          Reporter: xonqnoppp at gmail.com
                CC: buildroot at uclibc.org
  Target Milestone: ---

Created attachment 8126
  --> https://bugs.busybox.net/attachment.cgi?id=8126&action=edit
log of numpy compilation

When building for RaspberryPi 3 with 64bits from buildroot-2019.05 I get the
attached error. It did not happen with 32bits.

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[Buildroot] [Bug 11991] [numpy] segfault when compiling for RPi3 64bits

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=11991

--- Comment #1 from Peter Seiderer <ps.report@gmx.net> ---
Which GCC version? Mind to share your config/defconfig?

There is one more reference of the same compile failure on the web, see [1].

numpy/core/src/npymath/npy_math_internal.h.src:482:12: internal compiler error:
Segmentation fault
     return @kind@@c@(x, y);
            ^~~~~~~~~~~~~~~

Stating 'Bug does not occur when using -O0 on GCC 8.2.0 and does not occur at
all with GCC 9.1.0', mind to try a different compiler and/or optimization
setting?

Regards,
Peter

[1] https://github.com/numpy/numpy/issues/13622

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[Buildroot] [Bug 11991] [numpy] segfault when compiling for RPi3 64bits

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=11991

--- Comment #2 from XonqNopp <xonqnoppp@gmail.com> ---
Created attachment 8136
  --> https://bugs.busybox.net/attachment.cgi?id=8136&action=edit
Config used when encountering numpy segfault

Attached my .config (compressed because too large for bugzilla).

I started from configs/raspberry3_64_defconfig and added the stuff I need.

About GCC version I am not sure which one you want... So I have these:

$
/home/buildroot/buildroot201907numpySegFault/output/host/bin/aarch64-buildroot-linux-uclibc-gcc
--version
aarch64-buildroot-linux-uclibc-gcc.br_real (Buildroot 2019.05) 7.4.0
Copyright (C) 2017 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

$ gcc --version
gcc (Debian 6.3.0-18+deb9u1) 6.3.0 20170516
Copyright (C) 2016 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Let me know if you want to know about another one...

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[Buildroot] [Bug 11991] [numpy] segfault when compiling for RPi3 64bits

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=11991

--- Comment #3 from Peter Seiderer <ps.report@gmx.net> ---
Thanks for the info/config...

With make menuconfig under Toolchain-->GCC compiler Version you
can select different versions, e.g.

- gcc 4.9.x (works)
- gcc 5.x (untested)
- gcc 6.x (untested)
- gcc 7.x (your/default selection, numpy segfault)
- gcc 8.x (numpy segfault)

Or in case you use buildroot master from git

- gcc 9.x (works)

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[Buildroot] [Bug 11991] [numpy] segfault when compiling for RPi3 64bits

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=11991

--- Comment #4 from XonqNopp <xonqnoppp@gmail.com> ---
OK for the workaround. So you mean it is intrinsic to the gcc compiler and will
be fixed in the next major buildroot release (2019.08)? If so it is fine for
me. Thanks for the help.

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[Buildroot] [Bug 11991] [numpy] segfault when compiling for RPi3 64bits

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=11991

--- Comment #5 from Peter Seiderer <ps.report@gmx.net> ---
Update:

- gcc 5.x (works)
- gcc 6.x (numpy segfault)

Yes, gcc-9.1 support was added already on git master (see [1]) and will land in
the next buildroot release...

[1]
https://git.buildroot.net/buildroot/commit/?id=089000eccf584d611ad1a8e5400436952450e883

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[Buildroot] [Bug 11991] [numpy] segfault when compiling for RPi3 64bits

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=11991

XonqNopp <xonqnoppp@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED

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