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scylladb/test
Pekka Enberg c990f2bd34 Merge 'Reinstate [[nodiscard]] support' from Avi Kivity
The switch to clang disabled the clang-specific -Wunused-value
since it generated some harmless warnings. Unfortunately, that also
prevent [[nodiscard]] violations from warning.

Fix by clearing all instances of the warning (including [[nodiscard]]
violations that crept in while it was disabled) and reinstating the warning.

Closes #7767

* github.com:scylladb/scylla:
  build: reinstate -Wunused-value warning for [[nodiscard]]
  test: lib: don't ignore future in compare_readers()
  test: mutation_test: check both ranges when comparing summaries
  serialializer: silence unused value warning in variant deserializer
2020-12-12 09:54:05 +02:00
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