Userland: Mark compilation-unit-only functions as static

This enables a nice warning in case a function becomes dead code.

22 files changed, 85 insertions, 83 deletions

diff --git a/Userland/allocate.cpp b/Userland/allocate.cpp
index b047f51d19..cb712b8b3d 100644
--- a/Userland/allocate.cpp
+++ b/Userland/allocate.cpp
@@ -31,7 +31,7 @@
 #include <string.h>
 #include <unistd.h>
 
-void usage(void)
+static void usage(void)
 {
     printf("usage: allocate [number [unit (B/KB/MB)]]\n");
     exit(1);
diff --git a/Userland/cal.cpp b/Userland/cal.cpp
index 4f14a33ba6..679a42be61 100644
--- a/Userland/cal.cpp
+++ b/Userland/cal.cpp
@@ -44,7 +44,7 @@ int target_day;
 int current_year;
 int current_month;
 
-void append_to_print(char* buffer, int row, int column, char* text)
+static void append_to_print(char* buffer, int row, int column, char* text)
 {
     int starting_point = (line_width * row) + (column * column_width);
     for (int i = 0; text[i] != '\0'; i++) {
@@ -52,7 +52,7 @@ void append_to_print(char* buffer, int row, int column, char* text)
     }
 }
 
-void insert_month_to_print(int column, int month, int year)
+static void insert_month_to_print(int column, int month, int year)
 {
     int printing_column = column;
     int printing_row = 0;
@@ -95,7 +95,7 @@ void insert_month_to_print(int column, int month, int year)
     }
 }
 
-void clean_buffers()
+static void clean_buffers()
 {
     for (int i = 1; i < line_width * line_count; ++i) {
         print_buffer[i - 1] = i % line_width == 0 ? '\n' : ' ';
diff --git a/Userland/copy.cpp b/Userland/copy.cpp
index f0d94dc50d..8ef129bece 100644
--- a/Userland/copy.cpp
+++ b/Userland/copy.cpp
@@ -39,7 +39,7 @@ struct Options {
     StringView type;
 };
 
-Options parse_options(int argc, char* argv[])
+static Options parse_options(int argc, char* argv[])
 {
     const char* type = "text/plain";
     Vector<const char*> text;
diff --git a/Userland/disk_benchmark.cpp b/Userland/disk_benchmark.cpp
index 59798cd176..de3ff19849 100644
--- a/Userland/disk_benchmark.cpp
+++ b/Userland/disk_benchmark.cpp
@@ -42,7 +42,7 @@ struct Result {
     u64 read_bps;
 };
 
-Result average_result(const Vector<Result>& results)
+static Result average_result(const Vector<Result>& results)
 {
     Result average;
 
@@ -57,13 +57,13 @@ Result average_result(const Vector<Result>& results)
     return average;
 }
 
-void exit_with_usage(int rc)
+static void exit_with_usage(int rc)
 {
     fprintf(stderr, "Usage: disk_benchmark [-h] [-d directory] [-t time_per_benchmark] [-f file_size1,file_size2,...] [-b block_size1,block_size2,...]\n");
     exit(rc);
 }
 
-Result benchmark(const String& filename, int file_size, int block_size, ByteBuffer& buffer, bool allow_cache);
+static Result benchmark(const String& filename, int file_size, int block_size, ByteBuffer& buffer, bool allow_cache);
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/find.cpp b/Userland/find.cpp
index 0dce553689..baee2887a0 100644
--- a/Userland/find.cpp
+++ b/Userland/find.cpp
@@ -40,7 +40,7 @@ bool g_follow_symlinks = false;
 bool g_there_was_an_error = false;
 bool g_have_seen_action_command = false;
 
-[[noreturn]] void fatal_error(const char* format, ...)
+[[noreturn]] static void fatal_error(const char* format, ...)
 {
     fputs("\033[31m", stderr);
 
@@ -143,7 +143,7 @@ public:
             m_uid = passwd->pw_uid;
         } else {
             // Attempt to parse it as decimal UID.
-            auto number =  StringView(arg).to_uint();
+            auto number = StringView(arg).to_uint();
             if (!number.has_value())
                 fatal_error("Invalid user: \033[1m%s", arg);
             m_uid = number.value();
@@ -309,11 +309,11 @@ private:
     NonnullOwnPtr<Command> m_rhs;
 };
 
-OwnPtr<Command> parse_complex_command(char* argv[]);
+static OwnPtr<Command> parse_complex_command(char* argv[]);
 
 // Parse a simple command starting at optind; leave optind at its the last
 // argument. Return nullptr if we reach the end of arguments.
-OwnPtr<Command> parse_simple_command(char* argv[])
+static OwnPtr<Command> parse_simple_command(char* argv[])
 {
     StringView arg = argv[optind];
 
@@ -352,14 +352,16 @@ OwnPtr<Command> parse_simple_command(char* argv[])
     }
 }
 
-OwnPtr<Command> parse_complex_command(char* argv[])
+static OwnPtr<Command> parse_complex_command(char* argv[])
 {
     auto command = parse_simple_command(argv);
 
     while (command && argv[optind] && argv[optind + 1]) {
         StringView arg = argv[++optind];
 
-        enum { And, Or } binary_operation = And;
+        enum { And,
+            Or } binary_operation
+            = And;
 
         if (arg == "-a") {
             optind++;
@@ -389,7 +391,7 @@ OwnPtr<Command> parse_complex_command(char* argv[])
     return command;
 }
 
-NonnullOwnPtr<Command> parse_all_commands(char* argv[])
+static NonnullOwnPtr<Command> parse_all_commands(char* argv[])
 {
     auto command = parse_complex_command(argv);
 
@@ -405,7 +407,7 @@ NonnullOwnPtr<Command> parse_all_commands(char* argv[])
     return make<AndCommand>(command.release_nonnull(), make<PrintCommand>());
 }
 
-const char* parse_options(int argc, char* argv[])
+static const char* parse_options(int argc, char* argv[])
 {
     // Sadly, we can't use Core::ArgsParser, because find accepts arguments in
     // an extremely unusual format. We're going to try to use getopt(), though.
@@ -440,7 +442,7 @@ const char* parse_options(int argc, char* argv[])
     }
 }
 
-void walk_tree(const char* root_path, Command& command)
+static void walk_tree(const char* root_path, Command& command)
 {
     command.evaluate(root_path);
 
diff --git a/Userland/functrace.cpp b/Userland/functrace.cpp
index b431a4fbe3..97406fb08e 100644
--- a/Userland/functrace.cpp
+++ b/Userland/functrace.cpp
@@ -47,7 +47,7 @@
 #include <string.h>
 #include <unistd.h>
 
-OwnPtr<DebugSession> g_debug_session;
+static OwnPtr<DebugSession> g_debug_session;
 static bool g_should_output_color = false;
 
 static void handle_sigint(int)
@@ -58,7 +58,7 @@ static void handle_sigint(int)
     g_debug_session = nullptr;
 }
 
-void print_function_call(String function_name, size_t depth)
+static void print_function_call(String function_name, size_t depth)
 {
     for (size_t i = 0; i < depth; ++i) {
         printf("  ");
@@ -66,7 +66,7 @@ void print_function_call(String function_name, size_t depth)
     printf("=> %s\n", function_name.characters());
 }
 
-void print_syscall(PtraceRegisters& regs, size_t depth)
+static void print_syscall(PtraceRegisters& regs, size_t depth)
 {
     for (size_t i = 0; i < depth; ++i) {
         printf("  ");
@@ -83,7 +83,7 @@ void print_syscall(PtraceRegisters& regs, size_t depth)
         end_color);
 }
 
-NonnullOwnPtr<HashMap<void*, X86::Instruction>> instrument_code()
+static NonnullOwnPtr<HashMap<void*, X86::Instruction>> instrument_code()
 {
     (void)demangle("foo"); // Required for linked with __cxa_demangle
     auto instrumented = make<HashMap<void*, X86::Instruction>>();
diff --git a/Userland/id.cpp b/Userland/id.cpp
index fc0368b396..f0caa31508 100644
--- a/Userland/id.cpp
+++ b/Userland/id.cpp
@@ -81,7 +81,7 @@ int main(int argc, char** argv)
     return status;
 }
 
-bool print_uid_object(uid_t uid)
+static bool print_uid_object(uid_t uid)
 {
     if (flag_print_name) {
         struct passwd* pw = getpwuid(uid);
@@ -92,7 +92,7 @@ bool print_uid_object(uid_t uid)
     return true;
 }
 
-bool print_gid_object(gid_t gid)
+static bool print_gid_object(gid_t gid)
 {
     if (flag_print_name) {
         struct group* gr = getgrgid(gid);
@@ -102,7 +102,7 @@ bool print_gid_object(gid_t gid)
     return true;
 }
 
-bool print_gid_list()
+static bool print_gid_list()
 {
     int extra_gid_count = getgroups(0, nullptr);
     if (extra_gid_count) {
@@ -127,7 +127,7 @@ bool print_gid_list()
     return true;
 }
 
-bool print_full_id_list()
+static bool print_full_id_list()
 {
 
     uid_t uid = getuid();
@@ -159,7 +159,7 @@ bool print_full_id_list()
     return true;
 }
 
-int print_id_objects()
+static int print_id_objects()
 {
     if (flag_print_uid) {
         if (!print_uid_object(getuid()))
diff --git a/Userland/ifconfig.cpp b/Userland/ifconfig.cpp
index 9711fa8ccb..98761cf248 100644
--- a/Userland/ifconfig.cpp
+++ b/Userland/ifconfig.cpp
@@ -38,7 +38,7 @@
 #include <sys/ioctl.h>
 #include <sys/socket.h>
 
-String si_bytes(unsigned bytes)
+static String si_bytes(unsigned bytes)
 {
     if (bytes >= GB)
         return String::format("%fGiB", (double)bytes / (double)GB);
diff --git a/Userland/js.cpp b/Userland/js.cpp
index 42ea3705cb..66298b07da 100644
--- a/Userland/js.cpp
+++ b/Userland/js.cpp
@@ -82,7 +82,7 @@ static String prompt_for_level(int level)
     return prompt_builder.build();
 }
 
-String read_next_piece()
+static String read_next_piece()
 {
     StringBuilder piece;
 
@@ -234,7 +234,7 @@ static void print_regexp(const JS::Object& object, HashTable<JS::Object*>&)
     printf("\033[34;1m/%s/%s\033[0m", regexp.content().characters(), regexp.flags().characters());
 }
 
-void print_value(JS::Value value, HashTable<JS::Object*>& seen_objects)
+static void print_value(JS::Value value, HashTable<JS::Object*>& seen_objects)
 {
     if (value.is_empty()) {
         printf("\033[34;1m<empty>\033[0m");
@@ -292,14 +292,14 @@ static void print(JS::Value value)
     putchar('\n');
 }
 
-bool file_has_shebang(AK::ByteBuffer file_contents)
+static bool file_has_shebang(AK::ByteBuffer file_contents)
 {
     if (file_contents.size() >= 2 && file_contents[0] == '#' && file_contents[1] == '!')
         return true;
     return false;
 }
 
-StringView strip_shebang(AK::ByteBuffer file_contents)
+static StringView strip_shebang(AK::ByteBuffer file_contents)
 {
     size_t i = 0;
     for (i = 2; i < file_contents.size(); ++i) {
@@ -309,7 +309,7 @@ StringView strip_shebang(AK::ByteBuffer file_contents)
     return StringView((const char*)file_contents.data() + i, file_contents.size() - i);
 }
 
-bool write_to_file(const StringView& path)
+static bool write_to_file(const StringView& path)
 {
     int fd = open_with_path_length(path.characters_without_null_termination(), path.length(), O_WRONLY | O_CREAT | O_TRUNC, 0666);
     for (size_t i = 0; i < repl_statements.size(); i++) {
@@ -335,7 +335,7 @@ bool write_to_file(const StringView& path)
     return true;
 }
 
-bool parse_and_run(JS::Interpreter& interpreter, const StringView& source)
+static bool parse_and_run(JS::Interpreter& interpreter, const StringView& source)
 {
     auto parser = JS::Parser(JS::Lexer(source));
     auto program = parser.parse_program();
@@ -443,7 +443,7 @@ JS_DEFINE_NATIVE_FUNCTION(ReplObject::load_file)
     return JS::Value(true);
 }
 
-void repl(JS::Interpreter& interpreter)
+static void repl(JS::Interpreter& interpreter)
 {
     while (!s_fail_repl) {
         String piece = read_next_piece();
@@ -455,7 +455,7 @@ void repl(JS::Interpreter& interpreter)
 }
 
 static Function<void()> interrupt_interpreter;
-void sigint_handler()
+static void sigint_handler()
 {
     interrupt_interpreter();
 }
diff --git a/Userland/ls.cpp b/Userland/ls.cpp
index 5fd6c45fcf..4d0e4ea993 100644
--- a/Userland/ls.cpp
+++ b/Userland/ls.cpp
@@ -137,7 +137,7 @@ int main(int argc, char** argv)
     return status;
 }
 
-int print_escaped(const char* name)
+static int print_escaped(const char* name)
 {
     int printed = 0;
 
@@ -172,7 +172,7 @@ static String& hostname()
     return s_hostname;
 }
 
-size_t print_name(const struct stat& st, const String& name, const char* path_for_link_resolution, const char* path_for_hyperlink)
+static size_t print_name(const struct stat& st, const String& name, const char* path_for_link_resolution, const char* path_for_hyperlink)
 {
     if (!flag_disable_hyperlinks) {
         if (auto* full_path = realpath(path_for_hyperlink, nullptr)) {
@@ -250,7 +250,7 @@ static String human_readable_size(size_t size)
     return number_string_with_one_decimal((float)size / (float)GB, "G");
 }
 
-bool print_filesystem_object(const String& path, const String& name, const struct stat& st)
+static bool print_filesystem_object(const String& path, const String& name, const struct stat& st)
 {
     if (flag_show_inode)
         printf("%08u ", st.st_ino);
@@ -318,7 +318,7 @@ bool print_filesystem_object(const String& path, const String& name, const struc
     return true;
 }
 
-int do_file_system_object_long(const char* path)
+static int do_file_system_object_long(const char* path)
 {
     Core::DirIterator di(path, !flag_show_dotfiles ? Core::DirIterator::SkipDots : Core::DirIterator::Flags::NoFlags);
     if (di.has_error()) {
@@ -383,7 +383,7 @@ int do_file_system_object_long(const char* path)
     return 0;
 }
 
-bool print_filesystem_object_short(const char* path, const char* name, size_t* nprinted)
+static bool print_filesystem_object_short(const char* path, const char* name, size_t* nprinted)
 {
     struct stat st;
     int rc = lstat(path, &st);
diff --git a/Userland/lsof.cpp b/Userland/lsof.cpp
index 510e59c8fc..5bef9fdeed 100644
--- a/Userland/lsof.cpp
+++ b/Userland/lsof.cpp
@@ -42,7 +42,7 @@ struct OpenFile {
     String name;
 };
 
-Vector<OpenFile> get_open_files_by_pid(pid_t pid)
+static Vector<OpenFile> get_open_files_by_pid(pid_t pid)
 {
     auto file = Core::File::open(String::format("/proc/%d/fds", pid), Core::IODevice::OpenMode::ReadOnly);
     if (file.is_error()) {
@@ -69,7 +69,7 @@ Vector<OpenFile> get_open_files_by_pid(pid_t pid)
     return files;
 }
 
-void display_entry(const OpenFile& file, const Core::ProcessStatistics& statistics)
+static void display_entry(const OpenFile& file, const Core::ProcessStatistics& statistics)
 {
     printf("%-28s %4d %4d %-10s %4d %s\n", statistics.name.characters(), file.pid, statistics.pgid, statistics.username.characters(), file.fd, file.name.characters());
 }
diff --git a/Userland/more.cpp b/Userland/more.cpp
index 2299438aa3..18270e09b9 100644
--- a/Userland/more.cpp
+++ b/Userland/more.cpp
@@ -31,7 +31,7 @@
 
 static int key_fd;
 
-void wait_for_key()
+static void wait_for_key()
 {
     printf("\033[7m--[ more ]--\033[0m");
     fflush(stdout);
diff --git a/Userland/mount.cpp b/Userland/mount.cpp
index 697c377686..c5c0e8f072 100644
--- a/Userland/mount.cpp
+++ b/Userland/mount.cpp
@@ -35,7 +35,7 @@
 #include <string.h>
 #include <unistd.h>
 
-int parse_options(const StringView& options)
+static int parse_options(const StringView& options)
 {
     int flags = 0;
     Vector<StringView> parts = options.split_view(',');
@@ -60,12 +60,12 @@ int parse_options(const StringView& options)
     return flags;
 }
 
-bool is_source_none(const char* source)
+static bool is_source_none(const char* source)
 {
     return !strcmp("none", source);
 }
 
-int get_source_fd(const char* source)
+static int get_source_fd(const char* source)
 {
     if (is_source_none(source))
         return -1;
@@ -81,7 +81,7 @@ int get_source_fd(const char* source)
     return fd;
 }
 
-bool mount_all()
+static bool mount_all()
 {
     // Mount all filesystems listed in /etc/fstab.
     dbg() << "Mounting all filesystems...";
@@ -139,7 +139,7 @@ bool mount_all()
     return all_ok;
 }
 
-bool print_mounts()
+static bool print_mounts()
 {
     // Output info about currently mounted filesystems.
     auto df = Core::File::construct("/proc/df");
diff --git a/Userland/ping.cpp b/Userland/ping.cpp
index 9fb272b58c..54fbf343bd 100644
--- a/Userland/ping.cpp
+++ b/Userland/ping.cpp
@@ -36,7 +36,7 @@
 #include <time.h>
 #include <unistd.h>
 
-uint16_t internet_checksum(const void* ptr, size_t count)
+static uint16_t internet_checksum(const void* ptr, size_t count)
 {
     uint32_t checksum = 0;
     auto* w = (const uint16_t*)ptr;
diff --git a/Userland/rm.cpp b/Userland/rm.cpp
index 2ef96f063e..7cd575f198 100644
--- a/Userland/rm.cpp
+++ b/Userland/rm.cpp
@@ -35,7 +35,7 @@
 #include <sys/stat.h>
 #include <unistd.h>
 
-int remove(bool recursive, bool force, String path)
+static int remove(bool recursive, bool force, String path)
 {
     struct stat path_stat;
     if (lstat(path.characters(), &path_stat) < 0) {
diff --git a/Userland/seq.cpp b/Userland/seq.cpp
index cabc3d2ef1..2f6d1c40dd 100644
--- a/Userland/seq.cpp
+++ b/Userland/seq.cpp
@@ -30,7 +30,7 @@
 #include <string.h>
 #include <unistd.h>
 
-double get_double(const char* name, const char* d_string, int* number_of_decimals)
+static double get_double(const char* name, const char* d_string, int* number_of_decimals)
 {
     char* end;
     double d = strtod(d_string, &end);
diff --git a/Userland/sleep.cpp b/Userland/sleep.cpp
index e0e48612da..32dd646275 100644
--- a/Userland/sleep.cpp
+++ b/Userland/sleep.cpp
@@ -30,7 +30,7 @@
 #include <string.h>
 #include <unistd.h>
 
-void handle_sigint(int)
+static void handle_sigint(int)
 {
 }
 
diff --git a/Userland/tail.cpp b/Userland/tail.cpp
index 701fdbc3f4..9503357e47 100644
--- a/Userland/tail.cpp
+++ b/Userland/tail.cpp
@@ -36,7 +36,7 @@
 
 #define DEFAULT_LINE_COUNT 10
 
-int tail_from_pos(Core::File& file, off_t startline, bool want_follow)
+static int tail_from_pos(Core::File& file, off_t startline, bool want_follow)
 {
     if (!file.seek(startline + 1))
         return 1;
@@ -62,7 +62,7 @@ int tail_from_pos(Core::File& file, off_t startline, bool want_follow)
     return 0;
 }
 
-off_t find_seek_pos(Core::File& file, int wanted_lines)
+static off_t find_seek_pos(Core::File& file, int wanted_lines)
 {
     // Rather than reading the whole file, start at the end and work backwards,
     // stopping when we've found the number of lines we want.
diff --git a/Userland/tree.cpp b/Userland/tree.cpp
index 546d7c1d72..120bd5046e 100644
--- a/Userland/tree.cpp
+++ b/Userland/tree.cpp
@@ -41,7 +41,7 @@ static int max_depth = INT_MAX;
 static int g_directories_seen = 0;
 static int g_files_seen = 0;
 
-void print_directory_tree(const String& root_path, int depth, const String& indent_string)
+static void print_directory_tree(const String& root_path, int depth, const String& indent_string)
 {
     if (depth > 0) {
         String root_indent_string;
diff --git a/Userland/unzip.cpp b/Userland/unzip.cpp
index 7fc6bfd921..cf7bfaf9e9 100644
--- a/Userland/unzip.cpp
+++ b/Userland/unzip.cpp
@@ -33,7 +33,7 @@
 
 static const u8 central_directory_file_header_sig[] = "\x50\x4b\x01\x02";
 
-bool seek_and_read(u8* buffer, const MappedFile& file, off_t seek_to, size_t bytes_to_read)
+static bool seek_and_read(u8* buffer, const MappedFile& file, off_t seek_to, size_t bytes_to_read)
 {
     if (!buffer)
         return false;
@@ -46,7 +46,7 @@ bool seek_and_read(u8* buffer, const MappedFile& file, off_t seek_to, size_t byt
     return true;
 }
 
-bool find_next_central_directory(off_t file_size, const MappedFile& file, off_t current_index, off_t& return_index)
+static bool find_next_central_directory(off_t file_size, const MappedFile& file, off_t current_index, off_t& return_index)
 {
     off_t start_index = current_index == 0 ? current_index : current_index + 1;
     for (off_t index = start_index; index < file_size - 4; index++) {
@@ -62,7 +62,7 @@ bool find_next_central_directory(off_t file_size, const MappedFile& file, off_t
     return false;
 }
 
-bool unpack_file_for_central_directory_index(off_t central_directory_index, const MappedFile& file)
+static bool unpack_file_for_central_directory_index(off_t central_directory_index, const MappedFile& file)
 {
     enum CentralFileDirectoryHeaderOffsets {
         CFDHCompressionMethodOffset = 10,
diff --git a/Userland/watch.cpp b/Userland/watch.cpp
index a0e61c21a8..950de54fed 100644
--- a/Userland/watch.cpp
+++ b/Userland/watch.cpp
@@ -42,7 +42,7 @@ static bool flag_beep_on_fail = false;
 static volatile int exit_code = 0;
 static volatile pid_t child_pid = -1;
 
-String build_header_string(const Vector<const char*>& command, const struct timeval& interval)
+static String build_header_string(const Vector<const char*>& command, const struct timeval& interval)
 {
     StringBuilder builder;
     builder.appendf("Every %d", interval.tv_sec);
@@ -52,7 +52,7 @@ String build_header_string(const Vector<const char*>& command, const struct time
     return builder.build();
 }
 
-struct timeval get_current_time()
+static struct timeval get_current_time()
 {
     struct timespec ts;
     struct timeval tv;
@@ -61,14 +61,14 @@ struct timeval get_current_time()
     return tv;
 }
 
-int64_t usecs_from(const struct timeval& start, const struct timeval& end)
+static int64_t usecs_from(const struct timeval& start, const struct timeval& end)
 {
     struct timeval diff;
     timeval_sub(end, start, diff);
     return 1000000 * diff.tv_sec + diff.tv_usec;
 }
 
-void handle_signal(int signal)
+static void handle_signal(int signal)
 {
     if (child_pid > 0) {
         if (kill(child_pid, signal) < 0) {
@@ -84,7 +84,7 @@ void handle_signal(int signal)
     exit(exit_code);
 }
 
-int run_command(const Vector<const char*>& command)
+static int run_command(const Vector<const char*>& command)
 {
     if ((errno = posix_spawnp(const_cast<pid_t*>(&child_pid), command[0], nullptr, nullptr, const_cast<char**>(command.data()), environ))) {
         exit_code = 1;
@@ -92,23 +92,23 @@ int run_command(const Vector<const char*>& command)
         return errno;
     }
 
-   // Wait for the child to terminate, then return its exit code.
-   int status;
-   pid_t exited_pid;
-   do {
-       exited_pid = waitpid(child_pid, &status, 0);
-   } while (exited_pid < 0 && errno == EINTR);
-   ASSERT(exited_pid == child_pid);
-   child_pid = -1;
-   if (exited_pid < 0) {
-       perror("waitpid");
-       return 1;
-   }
-   if (WIFEXITED(status)) {
-       return WEXITSTATUS(status);
-   } else {
-       return 1;
-   }
+    // Wait for the child to terminate, then return its exit code.
+    int status;
+    pid_t exited_pid;
+    do {
+        exited_pid = waitpid(child_pid, &status, 0);
+    } while (exited_pid < 0 && errno == EINTR);
+    ASSERT(exited_pid == child_pid);
+    child_pid = -1;
+    if (exited_pid < 0) {
+        perror("waitpid");
+        return 1;
+    }
+    if (WIFEXITED(status)) {
+        return WEXITSTATUS(status);
+    } else {
+        return 1;
+    }
 }
 
 int main(int argc, char** argv)
diff --git a/Userland/wc.cpp b/Userland/wc.cpp
index 2cf74e6b89..497e5e937d 100644
--- a/Userland/wc.cpp
+++ b/Userland/wc.cpp
@@ -44,7 +44,7 @@ bool output_line = false;
 bool output_byte = false;
 bool output_word = false;
 
-void wc_out(Count& count)
+static void wc_out(Count& count)
 {
     if (output_line)
         printf("%7i ", count.lines);
@@ -56,7 +56,7 @@ void wc_out(Count& count)
     printf("%14s\n", count.name.characters());
 }
 
-Count get_count(const String& file_name)
+static Count get_count(const String& file_name)
 {
     Count count;
     FILE* file_pointer = nullptr;
@@ -86,7 +86,7 @@ Count get_count(const String& file_name)
     return count;
 }
 
-Count get_total_count(Vector<Count>& counts)
+static Count get_total_count(Vector<Count>& counts)
 {
     Count total_count { "total" };
     for (auto& count : counts) {