Warn if cascaded comparisons appear which do not have their mathematical meaning, e.g. if\ (23\ <=\ x\ <\ 42).
Warn if + or - is used as operand of << or >>, e.g. x\ +\ y\ <<\ z.
.It Fl Wredundant-decls
Warn about redundant declarations, i.e. multiple declarations of the same object or static forward declarations which have no use before their definition.
Warn if cascaded comparisons appear which do not have their mathematical meaning, e.g. if\ (23\ <=\ x\ <\ 42).
Warn if + or - is used as operand of << or >>, e.g. x\ +\ y\ <<\ z.
.It Fl Wredundant-decls
Warn about redundant declarations, i.e. multiple declarations of the same object or static forward declarations which have no use before their definition.