clang flags

    "-Wall"
    "-Wextra"
    "-Wpedantic"

    "-Wbad-function-cast"
    "-Wcast-qual"
    "-Wcomma"
    "-Wconditional-uninitialized"
    "-Wconversion"
    "-Wdeprecated"
    "-Wdouble-promotion"
    "-Wdynamic-exception-spec"
    "-Wduplicate-decl-specifier"
    "-Wduplicate-enum"
    "-Wduplicate-method-arg"
    "-Wduplicate-method-match"
    "-Wfloat-equal"
    "-Wformat-pedantic"
    "-Wheader-hygiene"
    "-Widiomatic-parentheses"
    "-Wimplicit-fallthrough"
    "-Wloop-analysis"
    "-Wmain"
    "-Wmethod-signatures"
    "-Wnarrowing"
    "-Wnon-virtual-dtor"
    "-Wold-style-cast"
    "-Woverlength-strings"
    "-Woverriding-method-mismatch"
    "-Wstatic-in-inline"
    "-Wsuper-class-method-mismatch"
    "-Wtautological-compare"
    "-Wtautological-constant-in-range-compare"
    "-Wthread-safety"
    "-Wunreachable-code-aggressive"
    "-Wvector-conversion"
    "-Wvla"
    "-Wzero-as-null-pointer-constant"