[tests] Make test harness portable.

Prior to this change, on non-Linux, the test harness will already
attempt to use dispatch functionality when testing dispatch itself. This
does not seem intentional, and instead appears to be intended as the Mac
OS case where the platform already has Dispatch and is using that when
testing the just-built version.

Instead, make the Linux case the general `__unix__` case.

Author: 3405691582

tests/bsdtestharness.c

@@ -20,6 +20,7 @@
 
 #include <dispatch/dispatch.h>
 #include <assert.h>
+#include <inttypes.h>
 #include <stdio.h>
 #include <stdlib.h>
 #if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
@@ -144,7 +145,7 @@ main(int argc, char *argv[])
 	//fprintf(stderr, "pid = %d\n", pid);
 	assert(pid > 0);
 
-#if defined(__linux__)
+#if defined(__unix__)
 	int status;
 	struct rusage usage;
 	struct timeval tv_stop, tv_wall;
@@ -159,9 +160,9 @@ main(int argc, char *argv[])
 
 	assert(res2 != -1);
 	test_long("Process exited", (WIFEXITED(status) && WEXITSTATUS(status) && WEXITSTATUS(status) != 0xff) || WIFSIGNALED(status), 0);
-	printf("[PERF]\twall time: %ld.%06ld\n", tv_wall.tv_sec, tv_wall.tv_usec);
-	printf("[PERF]\tuser time: %ld.%06ld\n", usage.ru_utime.tv_sec, usage.ru_utime.tv_usec);
-	printf("[PERF]\tsystem time: %ld.%06ld\n", usage.ru_stime.tv_sec, usage.ru_stime.tv_usec);
+	printf("[PERF]\twall time: %" PRIdMAX ".%06" PRIdMAX "\n", (intmax_t)tv_wall.tv_sec, (intmax_t)tv_wall.tv_usec);
+	printf("[PERF]\tuser time: %" PRIdMAX ".%06" PRIdMAX"\n", (intmax_t)usage.ru_utime.tv_sec, (intmax_t)usage.ru_utime.tv_usec);
+	printf("[PERF]\tsystem time: %" PRIdMAX ".%06" PRIdMAX "\n", (intmax_t)usage.ru_stime.tv_sec, (intmax_t)usage.ru_stime.tv_usec);
 	printf("[PERF]\tmax resident set size: %ld\n", usage.ru_maxrss);
 	printf("[PERF]\tpage faults: %ld\n", usage.ru_majflt);
 	printf("[PERF]\tswaps: %ld\n", usage.ru_nswap);