[Bug 1997093] Re: The `ovn-controller incremental processing` test fails when bash 5.2 is installed

[Frode Nordahl]

** Description changed:

  For some reason, when the test is executed using bash 5.2 on Debian
- experimental/Kinetic/Lunar, the `eval` [0] in the `counter_delta_`
- function misinterprets successful execution of commands [1], leading to
- a false negative for the 'ovn-controller incremental processing' test
- [2].
+ experimental or Ubuntu Kinetic/Lunar, the `eval` [0] in the
+ `counter_delta_` function misinterprets successful execution of commands
+ [1], leading to a false negative for the 'ovn-controller incremental
+ processing' test [2].
  
  Backporting the bash 5.1 package from Jammy, or compiling bash 5.1 from
  upstream sources and rerunning the test makes it succeed.
  
  This does come across as a regression in bash.
  
  0: https://github.com/ovn-org/ovn/blob/a042aa23e79a0d36f1ce7b0ccfcf0a5995b045cd/tests/ovn-performance.at#L116
  1: https://github.com/ovn-org/ovn/blob/a042aa23e79a0d36f1ce7b0ccfcf0a5995b045cd/tests/ovn-performance.at#L479
  2: https://github.com/ovn-org/ovn/blob/a042aa23e79a0d36f1ce7b0ccfcf0a5995b045cd/tests/ovn-performance.at#L227

** Description changed:

- For some reason, when the test is executed using bash 5.2 on Debian
- experimental or Ubuntu Kinetic/Lunar, the `eval` [0] in the
- `counter_delta_` function misinterprets successful execution of commands
- [1], leading to a false negative for the 'ovn-controller incremental
- processing' test [2].
+ OVN makes use of GNU autotest for its testsuite. This in turn is a heavy
+ user of bash.
+ 
+ For some reason, when the 'ovn-controller incremental processing' test
+ is executed using bash 5.2 on Debian experimental or Ubuntu
+ Kinetic/Lunar, the `eval` [0] in the `counter_delta_` function
+ misinterprets successful execution of commands [1], leading to a false
+ negative for the 'ovn-controller incremental processing' test [2].
  
  Backporting the bash 5.1 package from Jammy, or compiling bash 5.1 from
  upstream sources and rerunning the test makes it succeed.
  
  This does come across as a regression in bash.
  
  0: https://github.com/ovn-org/ovn/blob/a042aa23e79a0d36f1ce7b0ccfcf0a5995b045cd/tests/ovn-performance.at#L116
  1: https://github.com/ovn-org/ovn/blob/a042aa23e79a0d36f1ce7b0ccfcf0a5995b045cd/tests/ovn-performance.at#L479
  2: https://github.com/ovn-org/ovn/blob/a042aa23e79a0d36f1ce7b0ccfcf0a5995b045cd/tests/ovn-performance.at#L227

** Summary changed:

- The `ovn-controller incremental processing` test fails when bash 5.2 is installed
+ bash 5.2 regression in optimize_connection_fork

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https://bugs.launchpad.net/bugs/1997093

Title:
  bash 5.2 regression in optimize_connection_fork

Status in bash package in Ubuntu:
  New
Status in ovn package in Ubuntu:
  New

Bug description:
  OVN makes use of GNU autotest for its testsuite. This in turn is a
  heavy user of bash.

  For some reason, when the 'ovn-controller incremental processing' test
  is executed using bash 5.2 on Debian experimental or Ubuntu
  Kinetic/Lunar, the `eval` [0] in the `counter_delta_` function
  misinterprets successful execution of commands [1], leading to a false
  negative for the 'ovn-controller incremental processing' test [2].

  Backporting the bash 5.1 package from Jammy, or compiling bash 5.1
  from upstream sources and rerunning the test makes it succeed.

  This does come across as a regression in bash.

  0: https://github.com/ovn-org/ovn/blob/a042aa23e79a0d36f1ce7b0ccfcf0a5995b045cd/tests/ovn-performance.at#L116
  1: https://github.com/ovn-org/ovn/blob/a042aa23e79a0d36f1ce7b0ccfcf0a5995b045cd/tests/ovn-performance.at#L479
  2: https://github.com/ovn-org/ovn/blob/a042aa23e79a0d36f1ce7b0ccfcf0a5995b045cd/tests/ovn-performance.at#L227

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