kbuild: Remove unnecessary -Wno-unused-value
authorNathan Huckleberry <nhuck@google.com>
Mon, 17 Jun 2019 17:28:29 +0000 (10:28 -0700)
committerMasahiro Yamada <yamada.masahiro@socionext.com>
Sun, 23 Jun 2019 18:43:03 +0000 (03:43 +0900)
commit4df607cc6fe8e46b258ff2a53d0a60ca3008ffc7
tree386dc54c1edc73efab02805380a25264872d11bd
parent72ad21075df8a960007fb84b4c97e3ac55010f6a
kbuild: Remove unnecessary -Wno-unused-value

This flag turns off several other warnings that would
be useful. Most notably -warn_unused_result is disabled.
All of the following warnings are currently disabled:

UnusedValue
|-UnusedComparison
  |-warn_unused_comparison
|-UnusedResult
  |-warn_unused_result
|-UnevaluatedExpression
  |-PotentiallyEvaluatedExpression
    |-warn_side_effects_typeid
  |-warn_side_effects_unevaluated_context
|-warn_unused_expr
|-warn_unused_voidptr
|-warn_unused_container_subscript_expr
|-warn_unused_call

With this flag removed there are ~10 warnings.
Patches have been submitted for each of these warnings.

Reported-by: Nick Desaulniers <ndesaulniers@google.com>
Cc: clang-built-linux@googlegroups.com
Link: https://github.com/ClangBuiltLinux/linux/issues/520
Signed-off-by: Nathan Huckleberry <nhuck@google.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
scripts/Makefile.extrawarn