[PATCH COMMITTED] resolv: Compile without -Wno-write-strings

[Florian Weimer]

On 10/11/2016 06:52 PM, Zack Weinberg wrote:
> On Tue, Oct 11, 2016 at 9:50 AM, Florian Weimer <fweimer@redhat.com> wrote:
>>  extern const struct res_sym __p_class_syms[];
>>  libresolv_hidden_proto (__p_class_syms)
>>  const struct res_sym __p_class_syms[] = {
>> -       {C_IN,          "IN"},
>> -       {C_CHAOS,       "CHAOS"},
>> -       {C_HS,          "HS"},
>> -       {C_HS,          "HESIOD"},
>> -       {C_ANY,         "ANY"},
>> -       {C_NONE,        "NONE"},
>> -       {C_IN,          (char *)0}
>> +  {C_IN,    (char *) "IN"},
>> +  {C_CHAOS, (char *) "CHAOS"},
>> +  {C_HS,    (char *) "HS"},
>> +  {C_HS,    (char *) "HESIOD"},
>> +  {C_ANY,   (char *) "ANY"},
>> +  {C_NONE,  (char *) "NONE"},
>> +  {C_IN, NULL, NULL}
>
> As these (appear to be) internal symbols, why can't we make `struct
> res_sym` const-correct instead of adding all these casts?

__p_class_syms and __p_types_syms are public symbols.

struct res_sym comes from an installed header file.  I didn't want to 
change its definition just yet.

Thanks,
Florian