Merge pull request #1119 from Kijewski/error_old-style-definition

Exterminate old-style function definitions

Makefile.cflags

@@ -0,0 +1,31 @@
+# Test if the input language was specified externally.
+# Otherwise test if the compiler unterstands the "-std=gnu99" flag, and use it if so.
+# Otherwise test if the compiler unterstands the "-std=c99" flag, and use it if so.
+ifeq ($(filter -std=%,$(CFLAGS)),)
+ifeq ($(shell $(CC) -std=gnu99 -E - 2>/dev/null >/dev/null </dev/null ; echo $$?),0)
+CFLAGS += -std=gnu99
+else
+ifeq ($(shell $(CC) -std=c99 -E - 2>/dev/null >/dev/null </dev/null ; echo $$?),0)
+CFLAGS += -std=c99
+endif
+endif
+endif
+
+# Add `-fno-delete-null-pointer-checks` flag iff the compiler supports it.
+# GCC removes moves tests whether `x == NULL`, if previously `x` or even `x->y` was accessed.
+# 0x0 might be a sane memory location for embedded systems, so the test must not be removed.
+# Right now clang does not use the *delete-null-pointer* optimization, and does not understand the parameter.
+# Related issues: #628, #664.
+ifeq ($(shell $(CC) -fno-delete-null-pointer-checks -E - 2>/dev/null >/dev/null </dev/null ; echo $$?),0)
+ifeq ($(shell LANG=C $(CC) -fno-delete-null-pointer-checks -E - 2>&1 1>/dev/null </dev/null | grep warning: | grep -- -fno-delete-null-pointer-checks),)
+CFLAGS += -fno-delete-null-pointer-checks
+endif
+endif
+
+# Fast-out on old style function definitions.
+# They cause unreadable error compiler errors on missing semicolons.
+# Worse yet they hide errors by accepting wildcard argument types.
+ifeq ($(shell $(CC) -Wstrict-prototypes -Werror=strict-prototypes -Wold-style-definition -Werror=old-style-definition -E - 2>/dev/null >/dev/null </dev/null ; echo $$?),0)
+# duplicated parameters don't hurt
+CFLAGS += -Wstrict-prototypes -Werror=strict-prototypes -Wold-style-definition -Werror=old-style-definition
+endif

Makefile.include

@@ -54,29 +54,8 @@ ifneq (, $(filter $(DISABLE_MODULE), $(USEMODULE)))
 $(error "Required modules were disabled using DISABLE_MODULE: $(sort $(filter $(DISABLE_MODULE), $(USEMODULE)))")
 endif
 
-# Test if the input language was specified externally.
+# Feature test default CFLAGS and LINKFLAGS for the set compiled.
-# Otherwise test if the compiler unterstands the "-std=gnu99" flag, and use it if so.
+include $(RIOTBASE)/Makefile.cflags
-# Otherwise test if the compiler unterstands the "-std=c99" flag, and use it if so.
-ifeq ($(filter -std=%,$(CFLAGS)),)
-ifeq ($(shell $(CC) -std=gnu99 -E - 2>/dev/null >/dev/null </dev/null ; echo $$?),0)
-CFLAGS += -std=gnu99
-else
-ifeq ($(shell $(CC) -std=c99 -E - 2>/dev/null >/dev/null </dev/null ; echo $$?),0)
-CFLAGS += -std=c99
-endif
-endif
-endif
-
-# Add `-fno-delete-null-pointer-checks` flag iff the compiler supports it.
-# GCC removes moves tests whether `x == NULL`, if previously `x` or even `x->y` was accessed.
-# 0x0 might be a sane memory location for embedded systems, so the test must not be removed.
-# Right now clang does not use the *delete-null-pointer* optimization, and does not understand the parameter.
-# Related issues: #628, #664.
-ifeq ($(shell $(CC) -fno-delete-null-pointer-checks -E - 2>/dev/null >/dev/null </dev/null ; echo $$?),0)
-ifeq ($(shell LANG=C $(CC) -fno-delete-null-pointer-checks -E - 2>&1 1>/dev/null </dev/null | grep warning: | grep -- -fno-delete-null-pointer-checks),)
-CFLAGS += -fno-delete-null-pointer-checks
-endif
-endif
 
 # your binaries to link
 BASELIBS += $(BINDIR)$(BOARD)_base.a

boards/msb-430-common/board_init.c

@@ -233,7 +233,7 @@ void msp430_init_dco(void)
 #endif
 }
 
-void board_init()
+void board_init(void)
 {
     msp430_cpu_init();
     msb_ports_init();

boards/msba2-common/drivers/msba2-ltc4150.c

@@ -60,7 +60,7 @@ void __attribute__((__no_instrument_function__)) ltc4150_sync_blocking(void)
     while (!(FIO0PIN & BIT4)) {};
 }
 
-void __attribute__((__no_instrument_function__)) ltc4150_arch_init()
+void __attribute__((__no_instrument_function__)) ltc4150_arch_init(void)
 {
     FIO0DIR |= BIT5;
     FIO0SET = BIT5;

boards/msba2-common/tools/src/lpc2k_pgm.h

@@ -7,6 +7,6 @@ void change_baud(const char *baud_name);
 /* called before/after using serial device, used to have terminal
  * close the device.
 */
-void signal_terminal();
+void signal_terminal(void);
 
 #endif // LPC2K_PGM

boards/native/board_init.c

@@ -21,7 +21,7 @@
  * Nothing to initialize at the moment.
  * Turns the red LED on and the green LED off.
  */
-void board_init()
+void board_init(void)
 {
     LED_GREEN_OFF;
     LED_RED_ON;

boards/native/drivers/native-uart0.c

@@ -138,7 +138,7 @@ int init_tcp_socket(char *tcpport)
     return s;
 }
 
-int init_unix_socket()
+int init_unix_socket(void)
 {
     int s;
     struct sockaddr_un sa;
@@ -161,7 +161,7 @@ int init_unix_socket()
     return s;
 }
 
-void handle_uart_in()
+void handle_uart_in(void)
 {
     char buf[42];
     int nread;
@@ -198,7 +198,7 @@ void handle_uart_in()
     thread_yield();
 }
 
-void handle_uart_sock()
+void handle_uart_sock(void)
 {
     int s;
     socklen_t t;
@@ -226,7 +226,7 @@ void handle_uart_sock()
 }
 
 #ifdef MODULE_UART0
-void _native_handle_uart0_input()
+void _native_handle_uart0_input(void)
 {
     if (FD_ISSET(STDIN_FILENO, &_native_rfds)) {
         handle_uart_in();

boards/wsn430-common/board_init.c

@@ -143,7 +143,8 @@ void msp430_init_dco(void)
   }
 }
 
-void board_init() {
+void board_init(void)
+{
     msp430_cpu_init();
     msb_ports_init();
 

core/sched.c

@@ -57,7 +57,7 @@ static void (*sched_cb) (uint32_t timestamp, uint32_t value) = NULL;
 schedstat pidlist[MAXTHREADS];
 #endif
 
-void sched_run()
+void sched_run(void)
 {
     sched_context_switch_request = 0;
 

core/thread.c

@@ -32,12 +32,12 @@
 #include "hwtimer.h"
 #include "sched.h"
 
-inline int thread_getpid()
+inline int thread_getpid(void)
 {
     return active_thread->pid;
 }
 
-int thread_getlastpid()
+int thread_getlastpid(void)
 {
     return last_pid;
 }
@@ -60,7 +60,7 @@ const char *thread_getname(int pid)
     return sched_threads[pid]->name;
 }
 
-void thread_sleep()
+void thread_sleep(void)
 {
     if (inISR()) {
         return;

cpu/msp430-common/cpu.c

@@ -20,7 +20,7 @@ volatile int __inISR = 0;
 
 char __isr_stack[MSP430_ISR_STACK_SIZE];
 
-void thread_yield()
+void thread_yield(void)
 {
     __save_context();
 
@@ -84,7 +84,7 @@ char *thread_stack_init(void (*task_func)(void), void *stack_start, int stack_si
     return (char *) stackptr;
 }
 
-int inISR()
+int inISR(void)
 {
     return __inISR;
 }

cpu/msp430-common/hwtimer_cpu.c

@@ -77,7 +77,7 @@ void timer_unset(short timer)
     *ptr = 0;
 }
 
-unsigned long hwtimer_arch_now()
+unsigned long hwtimer_arch_now(void)
 {
     return ((uint32_t)timer_round << 16) + TIMER_VAL_REG;
 }

cpu/msp430-common/irq.c

@@ -22,7 +22,7 @@
 #include "irq.h"
 #include "cpu.h"
 
-unsigned int disableIRQ()
+unsigned int disableIRQ(void)
 {
     unsigned int state;
     __asm__("mov.w r2,%0" : "=r"(state));
@@ -35,7 +35,7 @@ unsigned int disableIRQ()
     return state;
 }
 
-unsigned int enableIRQ()
+unsigned int enableIRQ(void)
 {
     unsigned int state;
     __asm__("mov.w r2,%0" : "=r"(state));

cpu/native/hwtimer_cpu.c

@@ -179,7 +179,7 @@ void schedule_timer(void)
  *
  * set new system timer, call timer interrupt handler
  */
-void hwtimer_isr_timer()
+void hwtimer_isr_timer(void)
 {
     DEBUG("hwtimer_isr_timer()\n");
 
@@ -297,7 +297,7 @@ unsigned long hwtimer_arch_now(void)
  * Called once on process creation in order to mimic the behaviour a
  * regular hardware timer.
  */
-void native_hwtimer_pre_init()
+void native_hwtimer_pre_init(void)
 {
     /* initialize time delta */
     time_null = 0;

cpu/native/include/native_internal.h

@@ -41,13 +41,13 @@
  */
 void native_cpu_init(void);
 void native_interrupt_init(void);
-extern void native_hwtimer_pre_init();
+extern void native_hwtimer_pre_init(void);
 
-void native_irq_handler();
+void native_irq_handler(void);
 extern void _native_sig_leave_tramp(void);
 
-void _native_syscall_leave();
+void _native_syscall_leave(void);
-void _native_syscall_enter();
+void _native_syscall_enter(void);
 
 /**
  * external functions regularly wrapped in native for direct use

cpu/native/include/nativenet.h

@@ -51,7 +51,7 @@ void nativenet_init(int transceiver_pid);
 /**
  * Shutdown transceiver
  */
-void nativenet_powerdown();
+void nativenet_powerdown(void);
 
 /**
  * Enable/disable monitor mode
@@ -82,7 +82,7 @@ radio_address_t nativenet_set_address(radio_address_t address);
  *
  * @return the address
  */
-radio_address_t nativenet_get_address();
+radio_address_t nativenet_get_address(void);
 
 /**
  * @brief Sets the IEEE long address of the nativenet transceiver.
@@ -114,7 +114,7 @@ int16_t nativenet_set_channel(uint8_t channel);
  *
  * @return the channel
  */
-int16_t nativenet_get_channel();
+int16_t nativenet_get_channel(void);
 
 /**
  * Set transceiver pan
@@ -129,11 +129,11 @@ uint16_t nativenet_set_pan(uint16_t pan);
  *
  * @return the pan
  */
-uint16_t nativenet_get_pan();
+uint16_t nativenet_get_pan(void);
 
 /**
  * Enable transceiver rx mode
  */
-void nativenet_switch_to_rx();
+void nativenet_switch_to_rx(void);
 /** @} */
 #endif /* NATIVENET_H */

cpu/native/irq_cpu.c

@@ -105,7 +105,7 @@ void print_sigmasks(void)
     }
 }
 
-void native_print_signals()
+void native_print_signals(void)
 {
     sigset_t p, q;
     puts("native signals:\n");
@@ -253,7 +253,7 @@ int _native_popsig(void)
  * call signal handlers,
  * restore user context
  */
-void native_irq_handler()
+void native_irq_handler(void)
 {
     int sig;
 

cpu/native/lpm_cpu.c

@@ -43,7 +43,7 @@ void lpm_init(void)
     return;
 }
 
-void _native_lpm_sleep()
+void _native_lpm_sleep(void)
 {
 #ifdef MODULE_UART0
     int nfds;

cpu/native/native_cpu.c

@@ -147,7 +147,7 @@ void isr_cpu_switch_context_exit(void)
     errx(EXIT_FAILURE, "2 this should have never been reached!!");
 }
 
-void cpu_switch_context_exit()
+void cpu_switch_context_exit(void)
 {
 #ifdef NATIVE_AUTO_EXIT
     if (num_tasks <= 1) {
@@ -174,7 +174,7 @@ void cpu_switch_context_exit()
     errx(EXIT_FAILURE, "3 this should have never been reached!!");
 }
 
-void isr_thread_yield()
+void isr_thread_yield(void)
 {
     DEBUG("isr_thread_yield()\n");
 
@@ -189,7 +189,7 @@ void isr_thread_yield()
     }
 }
 
-void thread_yield()
+void thread_yield(void)
 {
     ucontext_t *ctx = (ucontext_t *)(active_thread->sp);
     if (_native_in_isr == 0) {
@@ -209,7 +209,7 @@ void thread_yield()
     }
 }
 
-void native_cpu_init()
+void native_cpu_init(void)
 {
     if (getcontext(&end_context) == -1) {
         err(EXIT_FAILURE, "end_context(): getcontext()");

cpu/native/net/interface.c

@@ -63,7 +63,7 @@ void nativenet_init(int transceiver_pid)
     _native_net_tpid = transceiver_pid;
 }
 
-void nativenet_powerdown()
+void nativenet_powerdown(void)
 {
     return;
 }
@@ -80,7 +80,7 @@ int16_t nativenet_set_channel(uint8_t channel)
     return _native_net_chan;
 }
 
-int16_t nativenet_get_channel()
+int16_t nativenet_get_channel(void)
 {
     return _native_net_chan;
 }
@@ -91,7 +91,7 @@ uint16_t nativenet_set_pan(uint16_t pan)
     return _native_net_pan;
 }
 
-uint16_t nativenet_get_pan()
+uint16_t nativenet_get_pan(void)
 {
     return _native_net_pan;
 }
@@ -103,7 +103,7 @@ radio_address_t nativenet_set_address(radio_address_t address)
     return _native_net_addr;
 }
 
-radio_address_t nativenet_get_address()
+radio_address_t nativenet_get_address(void)
 {
     DEBUG("nativenet_get_address -> address = %d\n", _native_net_addr);
     return _native_net_addr;
@@ -131,7 +131,7 @@ int8_t nativenet_send(radio_packet_t *packet)
     return send_buf(packet);
 }
 
-void nativenet_switch_to_rx()
+void nativenet_switch_to_rx(void)
 {
     return;
 }

cpu/native/startup.c

@@ -136,7 +136,7 @@ void _native_log_stderr(char *stderrtype)
     }
 }
 
-void daemonize()
+void daemonize(void)
 {
     if ((_native_pid = fork()) == -1) {
         err(EXIT_FAILURE, "daemonize: fork");
@@ -148,7 +148,7 @@ void daemonize()
     }
 }
 
-void usage_exit()
+void usage_exit(void)
 {
     real_printf("usage: %s", _progname);
 

cpu/native/syscalls.c

@@ -55,7 +55,7 @@ void (*real_free)(void *ptr);
 void* (*real_calloc)(size_t nmemb, size_t size);
 void* (*real_realloc)(void *ptr, size_t size);
 
-void _native_syscall_enter()
+void _native_syscall_enter(void)
 {
     _native_in_syscall++;
 #if LOCAL_DEBUG
@@ -63,7 +63,7 @@ void _native_syscall_enter()
 #endif
 }
 
-void _native_syscall_leave()
+void _native_syscall_leave(void)
 {
 #if LOCAL_DEBUG
     real_write(STDERR_FILENO, "< _native_in_syscall\n", 21);

dist/tools/linux-border_router/sixlowdriver.h

@@ -166,13 +166,13 @@ int border_add_addr(const char *ip_addr);
  *          router.
  * @return  This border router's current version.
  */
-uint16_t get_abro_version();
+uint16_t get_abro_version(void);
 
 /**
  * @brief   Increments and updates the version for ABROs send by this
  *          router.
  * @return  This border router's new ABRO version.
  */
-uint16_t get_next_abro_version();
+uint16_t get_next_abro_version(void);
 
 #endif /* SIXLOWDRIVER_H*/

drivers/cc110x/cc1100_phy.c

@@ -153,7 +153,7 @@ cc1100_statistic_t cc1100_statistic;
 //					Initialization of physical layer
 /*---------------------------------------------------------------------------*/
 
-void cc1100_phy_init()
+void cc1100_phy_init(void)
 {
     int i;
 

drivers/cc110x_ng/cc110x.c

@@ -121,7 +121,7 @@ uint8_t cc110x_get_buffer_pos(void)
     return (rx_buffer_next - 1);
 }
 
-radio_address_t cc110x_get_address()
+radio_address_t cc110x_get_address(void)
 {
     return radio_address;
 }

sys/net/network_layer/sixlowpan/lowpan.c

@@ -1542,7 +1542,7 @@ void lowpan_iphc_decoding(uint8_t *data, uint8_t length, net_if_eui64_t *s_addr,
     packet_length = IPV6_HDR_LEN + ipv6_buf->length;
 }
 
-uint8_t lowpan_context_len()
+uint8_t lowpan_context_len(void)
 {
     return context_len;
 }
@@ -1596,7 +1596,7 @@ lowpan_context_t *lowpan_context_update(uint8_t num, const ipv6_addr_t *prefix,
     return context;
 }
 
-lowpan_context_t *lowpan_context_get()
+lowpan_context_t *lowpan_context_get(void)
 {
     return contexts;
 }

sys/net/routing/rpl/rpl_dodag.c

@@ -65,7 +65,7 @@ rpl_instance_t *rpl_get_instance(uint8_t instanceid)
     return NULL;
 }
 
-rpl_instance_t *rpl_get_my_instance()
+rpl_instance_t *rpl_get_my_instance(void)
 {
     for (int i = 0; i < RPL_MAX_INSTANCES; i++) {
         if (instances[i].joined) {
@@ -115,7 +115,7 @@ rpl_dodag_t *rpl_get_dodag(ipv6_addr_t *id)
 
     return NULL;
 }
-rpl_dodag_t *rpl_get_my_dodag()
+rpl_dodag_t *rpl_get_my_dodag(void)
 {
     for (int i = 0; i < RPL_MAX_DODAGS; i++) {
         if (dodags[i].joined) {
@@ -416,7 +416,7 @@ void rpl_local_repair(void)
 
 }
 
-ipv6_addr_t *rpl_get_my_preferred_parent()
+ipv6_addr_t *rpl_get_my_preferred_parent(void)
 {
     rpl_dodag_t *my_dodag = rpl_get_my_dodag();
 

sys/net/routing/rpl/trickle.c

@@ -217,7 +217,7 @@ void dao_delay_over(void)
     }
 }
 
-void dao_ack_received()
+void dao_ack_received(void)
 {
     ack_received = true;
     long_delay_dao();

sys/vtimer/vtimer.c

@@ -287,7 +287,7 @@ void vtimer_get_localtime(struct tm *localt)
     // TODO: fill the other fields
 }
 
-int vtimer_init()
+int vtimer_init(void)
 {
     DEBUG("vtimer_init().\n");
     int state = disableIRQ();