[MacPorts] #71456: audacious-plugins @4.4.2: error: constexpr function never produces a constant expression [-Winvalid-constexpr] (was: audacious-plugins 4.4.2: fails to build, command execuction failed)

[MacPorts]

#71456: audacious-plugins @4.4.2: error: constexpr function never produces a
constant expression [-Winvalid-constexpr]
--------------------------------+----------------------
  Reporter:  punkcakez13        |      Owner:  Ionic
      Type:  defect             |     Status:  assigned
  Priority:  Normal             |  Milestone:
 Component:  ports              |    Version:  2.10.5
Resolution:                     |   Keywords:  catalina
      Port:  audacious-plugins  |
--------------------------------+----------------------
Changes (by ryandesign):

 * status:  new => assigned
 * cc: ionic@…, makr@… (removed)
 * cc: mohd-akram (added)
 * owner:  (none) => Ionic
 * keywords:   => catalina
 * port:  aduacious audacious-plugins => audacious-plugins


Comment:

 The log says the problem is:

 {{{
 In file included from ../audacious-
 plugins-4.4.2/src/background_music/background_music.cc:19:
 In file included from ../audacious-
 plugins-4.4.2/src/background_music/FrameBasedEffectPlugin.h:21:
 In file included from ../audacious-
 plugins-4.4.2/src/background_music/LoudnessFrameProcessor.h:22:
 ../audacious-plugins-4.4.2/src/background_music/Loudness.h:46:28: error:
 constexpr function never produces a constant expression [-Winvalid-
 constexpr]
     static constexpr float get_weight(const float seconds)
                            ^
 ../audacious-plugins-4.4.2/src/background_music/Loudness.h:51:16: note:
 non-constexpr function 'powf' cannot be used in a constant expression
         return powf(relative, perception_weight_power);
                ^
 /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/math.h:428:14:
 note: declared here
 extern float powf(float, float);
              ^
 1 error generated.
 }}}

 It probably needs to be [https://github.com/audacious-media-
 player/audacious/issues reported to the developers] so they can fix it.

-- 
Ticket URL: <https://trac.macports.org/ticket/71456#comment:1>
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