fix sparse warnings

src/getty-generator.c

@@ -28,7 +28,7 @@
 #include "unit-name.h"
 #include "virt.h"
 
-const char *arg_dest = "/tmp";
+static const char *arg_dest = "/tmp";
 
 static int add_symlink(const char *fservice, const char *tservice) {
         char *from = NULL, *to = NULL;

src/hashmap.c

@@ -55,10 +55,10 @@ struct pool {
         unsigned n_used;
 };
 
-struct pool *first_hashmap_pool = NULL;
+static struct pool *first_hashmap_pool = NULL;
 static void *first_hashmap_tile = NULL;
 
-struct pool *first_entry_pool = NULL;
+static struct pool *first_entry_pool = NULL;
 static void *first_entry_tile = NULL;
 
 static void* allocate_tile(struct pool **first_pool, void **first_tile, size_t tile_size) {

src/log.c

@@ -625,11 +625,11 @@ _noreturn_ static void log_assert(const char *text, const char *file, int line,
 }
 #pragma GCC diagnostic pop
 
-void log_assert_failed(const char *text, const char *file, int line, const char *func) {
+_noreturn_ void log_assert_failed(const char *text, const char *file, int line, const char *func) {
         log_assert(text, file, line, func, "Assertion '%s' failed at %s:%u, function %s(). Aborting.");
 }
 
-void log_assert_failed_unreachable(const char *text, const char *file, int line, const char *func) {
+_noreturn_ void log_assert_failed_unreachable(const char *text, const char *file, int line, const char *func) {
         log_assert(text, file, line, func, "Code should not be reached '%s' at %s:%u, function %s(). Aborting.");
 }
 

src/macro.h

@@ -23,6 +23,7 @@
 ***/
 
 #include <assert.h>
+#include <sys/param.h>
 #include <sys/types.h>
 #include <sys/uio.h>
 #include <inttypes.h>

src/mount.c

@@ -271,7 +271,7 @@ static char* mount_test_option(const char *haystack, const char *needle) {
          * struct mntent */
 
         if (!haystack)
-                return false;
+                return NULL;
 
         zero(me);
         me.mnt_opts = (char*) haystack;

src/util.c

@@ -892,7 +892,7 @@ int load_env_file(
                 char ***rl) {
 
         FILE *f;
-        char **m = 0;
+        char **m = NULL;
         int r;
 
         assert(fname);
@@ -4177,7 +4177,7 @@ int wait_for_terminate_and_warn(const char *name, pid_t pid) {
 
 }
 
-void freeze(void) {
+_noreturn_ void freeze(void) {
 
         /* Make sure nobody waits for us on a socket anymore */
         close_all_fds(NULL, 0);