Public bug reported:

[Impact]
Mesa is now built with meson, and it turns out that meson < 0.47.0 (commit 
7c4736d27f4c5d7 to be exact) doesn't handle command line options properly which 
means that -Db_ndebug=true didn't have any effect when mesa is built on bionic. 
This means that some asserts are enabled, and at least nouveau is affected.

[Test case]
chech the build log that -DNDEBUG is passed

[Regression potential]
none really, it just adds a build flag which should've been there

** Affects: mesa (Ubuntu)
     Importance: Undecided
         Status: Invalid

** Affects: mesa (Ubuntu Bionic)
     Importance: Undecided
     Assignee: Timo Aaltonen (tjaalton)
         Status: Confirmed

** Also affects: mesa (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Changed in: mesa (Ubuntu)
       Status: New => Invalid

** Changed in: mesa (Ubuntu Bionic)
       Status: New => Confirmed

** Changed in: mesa (Ubuntu Bionic)
     Assignee: (unassigned) => Timo Aaltonen (tjaalton)

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https://bugs.launchpad.net/bugs/1841412

Title:
  Build with NDEBUG again

Status in mesa package in Ubuntu:
  Invalid
Status in mesa source package in Bionic:
  Confirmed

Bug description:
  [Impact]
  Mesa is now built with meson, and it turns out that meson < 0.47.0 (commit 
7c4736d27f4c5d7 to be exact) doesn't handle command line options properly which 
means that -Db_ndebug=true didn't have any effect when mesa is built on bionic. 
This means that some asserts are enabled, and at least nouveau is affected.

  [Test case]
  chech the build log that -DNDEBUG is passed

  [Regression potential]
  none really, it just adds a build flag which should've been there

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https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1841412/+subscriptions

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