Build errors on 32-bit architectures [-Werror=format=]

[vt-alt]

For 2.6 there are build errors on x86 (i586) and arm32 (armv7hf):

fuzz.c:258:30: error: format '%lu' expects argument of type 'long unsigned int', but argument 5 has type 'size_t' {aka 'unsigned int'} [-Werror=format=]
fuzz.c:258:35: error: format '%lu' expects argument of type 'long unsigned int', but argument 6 has type 'size_t' {aka 'unsigned int'} [-Werror=format=]
fuzz.c:258:17: error: format '%llu' expects argument of type 'long long unsigned int', but argument 7 has type 'size_t' {aka 'unsigned int'} [-Werror=format=]
fuzz.c:258:17: error: format '%llu' expects argument of type 'long long unsigned int', but argument 8 has type 'size_t' {aka 'unsigned int'} [-Werror=format=]
fuzz.c:258:17: error: format '%llu' expects argument of type 'long long unsigned int', but argument 9 has type 'size_t' {aka 'unsigned int'} [-Werror=format=]
input.c:663:15: error: format '%lu' expects argument of type 'long unsigned int', but argument 7 has type 'size_t' {aka 'unsigned in '} [-Werror=format=]

Perhaps %zu should be used? Or you should not have used size_t for counters in the first place, as size_t is intended for maximum object (array) sizes (i.e. maximum sizeof value), and obviously this on 32-platforms is 32-bit number.

[vt-alt]

Possible solution:

diff --git a/fuzz.c b/fuzz.c
index 398cae34..0e6919f9 100644
--- a/fuzz.c
+++ b/fuzz.c
@@ -255,8 +255,7 @@ static void fuzz_perfFeedback(run_t* run) {
             size_t tot_exec_per_sec = elapsed_sec ? (curr_exec_cnt / elapsed_sec) : 0;

             dprintf(run->global->io.statsFileFd,
-                "%lu, %lu, %lu, %lu, "
-                "%" PRIu64 ", %" PRIu64 ", %" PRIu64 ", %" PRIu64 ", %" PRIu64 "\n",
+                "%lu, %lu, %zu, %zu, %zu, %zu, %zu, %ju, %ju\n",
                 curr_sec,                                 /* unix_time */
                 run->global->timing.lastCovUpdate,        /* last_cov_update */
                 curr_exec_cnt,                            /* total_exec */
diff --git a/input.c b/input.c
index a03b6674..e056d3a5 100644
--- a/input.c
+++ b/input.c
@@ -660,7 +660,7 @@ void input_enqueueDynamicInputs(honggfuzz_t* hfuzz) {
             continue;
         }

-        LOG_I("Loading dynamic input file: %s (%lu)", dynamicInputFileName, dynamicFileSz);
+        LOG_I("Loading dynamic input file: %s (%zu)", dynamicInputFileName, dynamicFileSz);

         run_t tmp_run;
         tmp_run.global        = hfuzz;

[robertswiecki]

Looks good, would it be possible to send a PR with this?