Wwrite-strings
C ObjC C++ ObjC++ Var(warn_write_strings) Warning
-In C++, nonzero means warn about deprecated conversion from string literals to `char *'. In C, similar warning, except that the conversion is of course not deprecated by the ISO C standard.
+In C++, nonzero means warn about deprecated conversion from string literals to 'char *'. In C, similar warning, except that the conversion is of course not deprecated by the ISO C standard.
Wpointer-sign
C ObjC Var(warn_pointer_sign) Init(-1) Warning