[Bug 2032624] Re: mumax3 test suite fails against glibc 2.38

Mitchell Dzurick 2032624 at bugs.launchpad.net
Wed Aug 23 04:13:42 UTC 2023


This commit
https://sourceware.org/git/?p=glibc.git;a=commit;h=cd94326a1326c4e3f1ee7a8d0a161cc0bdcaf07e
added the file `sysdeps/aarch64/fpu/bits/math-vector.h.

On a mantic system, the header file gets placed at /usr/include/aarch64-linux-gnu/bits/math-vector.h, which used to do only a single thing for aarch64, which was:
#include <bits/libm-simd-decl-stubs.h>

And after the commit, a few types are added such as

#if __GNUC_PREREQ(9, 0)
#  define __ADVSIMD_VEC_MATH_SUPPORTED
typedef __Float32x4_t __f32x4_t;
typedef __Float64x2_t __f64x2_t;
...

Simply commenting out the new types is enough to fix this issue, but
completely removing the newly added support for libmvec is not a great
idea.

Perhaps nvidia-cuda-toolkit-gcc needs to be rebuilt with support for
these types?

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https://bugs.launchpad.net/bugs/2032624

Title:
  mumax3 test suite fails against glibc 2.38

Status in glibc package in Ubuntu:
  New
Status in mumax3 package in Ubuntu:
  New

Bug description:
  The autopkgtests fail with the following error:

  921s nvcc -std=c++03 -ccbin=/usr/bin/cuda-gcc --compiler-options -Werror --compiler-options -Wall -Xptxas -O3 -ptx -arch=compute_50 -code=sm_50 copypadmul2.cu -o copypadmul2_50.ptx
  922s /usr/include/aarch64-linux-gnu/bits/math-vector.h(30): error: identifier "__Float32x4_t" is undefined
  922s 
  922s /usr/include/aarch64-linux-gnu/bits/math-vector.h(31): error: identifier "__Float64x2_t" is undefined
  922s 
  922s /usr/include/aarch64-linux-gnu/bits/math-vector.h(40): error: identifier "__SVFloat32_t" is undefined
  922s 
  922s /usr/include/aarch64-linux-gnu/bits/math-vector.h(41): error: identifier "__SVFloat64_t" is undefined
  922s 
  922s /usr/include/aarch64-linux-gnu/bits/math-vector.h(42): error: identifier "__SVBool_t" is undefined

  Marking as critical as this blocks the glibc transition.

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