Fix size_t and time_t format specifiers

[micmac1]

Use "%zu" for size_t and cast time_t to (long long) before printing with "%lld". Fixes the below mentioned warnings.

time_t:

src/stir_shaken_passport.c:818:98: error: format '%zu' expects argument of type 'size_t', but argument 4 has type 'time_t' {aka 'long long int'} [-Werror=format=]
  818 |                 snprintf(err_buf, STIR_SHAKEN_ERROR_BUF_LEN, "PASSporT's @iat (in seconds) is: %zu, freshness is: %u, BUT now is %zu (this is PASSporT to the future, too young, not valid yet)", iat, iat_freshness, now_s);
      |                                                                                                ~~^                                                                                                ~~~
      |                                                                                                  |                                                                                                |
      |                                                                                                  unsigned int                                                                                     time_t {aka long long int}
      |                                                                                                %llu

size_t:

util/src/stir_shaken_ca.c:128:84: warning: format '%lu' expects argument of type 'long unsigned int', but argument 5 has type 'size_t' {aka 'unsigned int'} [-Wformat=]
  128 |                                 mg_printf(nc, "HTTP/1.1 %s %s\r\nContent-Length: %lu\r\nContent-Type: application/json\r\n\r\n%s\r\n\r\n", STIR_SHAKEN_HTTP_REQ_404_NOT_FOUND, error_phrase, strlen(error_body), error_body);
      |                                                                                  ~~^                                                                                                         ~~~~~~~~~~~~~~~~~~
      |                                                                                    |                                                                                                         |
      |                                                                                    long unsigned int                                                                                         size_t {aka unsigned int}
      |                                                                                  %u

Signed-off-by: Sebastian Kemper sebastian_ml@gmx.net

[mjerris]

These format specifiers actually differ by platform. what os/arch are you targeting where you have issues here?

[micmac1]

These format specifiers actually differ by platform. what os/arch are you targeting where you have issues here?

Hi there, Linux/OpenWrt, lots of targets (ppc, mips, mipsel, mips64, aarch64, arc...)

Regarding time_t see also https://github.com/signalwire/freeswitch/pull/1409 (where @crienzo asked you to review a while ago).

Regarding size_t the common answer on stackoveflow as to what format specifier to use seems to be use "z" when you're dealing with compilers supporting C99. You already use "z" elsewhere in the lib, so I figure it's fine.

[mrtrev]

Looks like this is probably the resolution to the issue I just created #117

Any reason it hasn't been committed yet? I was just preparing to create a PR with the same change from %lu to %zu for all of the strlen calls.

[andywolk]

Shouldn't we have %zu in all the places without a cast?

[micmac1]

Hi Andrey,

Not sure what you mean. Can you be specific and provide an example?

Kind regards, Seb

[mrtrev]

Voting again that this be merged. Doesn't seem like anyone has had an objection in a year now.

[andywolk]

Why do you cast variables?

[micmac1]

Am 20. Dezember 2022 16:14:47 UTC schrieb Andrey Volk @.***>:

Why do you cast variables?

Because of Y2K38

https://en.m.wikipedia.org/wiki/Year_2038_problem

[andywolk]

Is there a way to fix the issue without casting?