[MacPorts] #59678: fftw-3 @3.3.8 (math): on macOS Catalina (only) segmentation fault for 2^N with N=12

[MacPorts]

#59678: fftw-3 @3.3.8 (math): on macOS Catalina (only) segmentation fault for 2^N
with N=12
---------------------+--------------------
  Reporter:  sa35    |      Owner:  (none)
      Type:  defect  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:  2.6.2
Resolution:          |   Keywords:
      Port:  fftw-3  |
---------------------+--------------------

Comment (by astroboylrx):

 I've countered this issue, too. I don't know whose bug it is, either
 fftw-3 or Catalina. But there are reports from other softwares with this
 issue, e.g., ffmpeg [https://trac.ffmpeg.org/ticket/8073]

 If you use LLDB to debug the program you attached (see below), you'll see
 it's a general protection fault: `code=EXC_I386_GPFLT` (some explanations
 here [https://stackoverflow.com/a/19652167/4009531]). And the error is
 called {{{libdyld.dylib`stack_not_16_byte_aligned_error}}}. The 12th
 comment [https://trac.ffmpeg.org/ticket/8073#comment:12] in the ffmpeg bug
 tracker forum explained a little bit: "Stack checking is on by default on
 all platforms to prevent memory corruptions. (25859140)". And this post
 [https://artempyanykh.com/blog/posts/2019-01-16-assembling-fizz-buzz.html
 #stack-align] also explains a little bit: "When memory is not aligned the
 processor generates a general protection exception that translates to a
 segmentation fault."

 {{{
 ➜  ~/build $ lldb ./fftw3_test
 (lldb) target create "./fftw3_test"
 Current executable set to './fftw3_test' (x86_64).
 (lldb) run
 Process 80432 launched:
 '/Users/rixin/Downloads/fftw3_bare/build/fftw3_test' (x86_64)
 debug> N=4096, offset=0
 Process 80432 stopped
 * thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS
 (code=EXC_I386_GPFLT)
     frame #0: 0x00007fff655352be
 libdyld.dylib`stack_not_16_byte_aligned_error
 libdyld.dylib`stack_not_16_byte_aligned_error:
 ->  0x7fff655352be <+0>: movdqa %xmm0, (%rsp)
     0x7fff655352c3 <+5>: int3
     0x7fff655352c4 <+6>: nop
     0x7fff655352c5 <+7>: nop
 Target 0: (fftw3_test) stopped.
 }}}

 Hopefully, my search can contribute more information to the discussions
 here. Sadly, there is no listed maintainer for this port. I've tried to
 Google this error but got no luck. Thanks a lot for mentioning that
 compiling fftw from the source could work. I will try that.

-- 
Ticket URL: <https://trac.macports.org/ticket/59678#comment:7>
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