AP_HAL: add format attribute to panic()

libraries/AP_HAL/Scheduler.h

@@ -4,6 +4,7 @@
 
 #include <stdint.h>
 
+#include <AP_Common/AP_Common.h>
 #include <AP_Progmem/AP_Progmem.h>
 
 #include "AP_HAL_Boards.h"
@@ -56,7 +57,7 @@ public:
     virtual bool     system_initializing() = 0;
     virtual void     system_initialized() = 0;
 
-    virtual void     panic(const prog_char_t *errormsg, ...) NORETURN = 0;
+    virtual void     panic(const prog_char_t *errormsg, ...) FORMAT(2, 3) NORETURN = 0;
     virtual void     reboot(bool hold_in_bootloader) = 0;
 
     /**

libraries/AP_HAL_AVR/Scheduler.h

@@ -45,7 +45,7 @@ public:
     bool     system_initializing();
     void     system_initialized();
 
-    void     panic(const prog_char_t *errormsg, ...) NORETURN;
+    void     panic(const prog_char_t *errormsg, ...) FORMAT(2, 3) NORETURN;
     void     reboot(bool hold_in_bootloader);
 
     void     set_timer_speed(uint16_t timer_hz);

libraries/AP_HAL_Empty/Scheduler.h

@@ -32,7 +32,7 @@ public:
     bool     system_initializing();
     void     system_initialized();
 
-    void     panic(const prog_char_t *errormsg, ...) NORETURN;
+    void     panic(const prog_char_t *errormsg, ...) FORMAT(2, 3) NORETURN;
     void     reboot(bool hold_in_bootloader);
 
 };

libraries/AP_HAL_FLYMAPLE/Scheduler.h

@@ -53,7 +53,7 @@ public:
     bool     system_initializing();
     void     system_initialized();
 
-    void     panic(const prog_char_t *errormsg, ...) NORETURN;
+    void     panic(const prog_char_t *errormsg, ...) FORMAT(2, 3) NORETURN;
     void     reboot(bool hold_in_bootloader);
 
 private:

libraries/AP_HAL_Linux/Scheduler.h

@@ -43,7 +43,7 @@ public:
     bool     system_initializing();
     void     system_initialized();
 
-    void     panic(const prog_char_t *errormsg, ...) NORETURN;
+    void     panic(const prog_char_t *errormsg, ...) FORMAT(2, 3) NORETURN;
     void     reboot(bool hold_in_bootloader);
 
     void     stop_clock(uint64_t time_usec);

libraries/AP_HAL_PX4/Scheduler.h

@@ -60,7 +60,7 @@ public:
     void     suspend_timer_procs();
     void     resume_timer_procs();
     void     reboot(bool hold_in_bootloader);
-    void     panic(const prog_char_t *errormsg, ...) NORETURN;
+    void     panic(const prog_char_t *errormsg, ...) FORMAT(2, 3) NORETURN;
 
     bool     in_timerprocess();
     bool     system_initializing();

libraries/AP_HAL_SITL/Scheduler.h

@@ -41,7 +41,7 @@ public:
     void     system_initialized();
 
     void     reboot(bool hold_in_bootloader);
-    void     panic(const prog_char_t *errormsg, ...) NORETURN;
+    void     panic(const prog_char_t *errormsg, ...) FORMAT(2, 3) NORETURN;
 
     bool     interrupts_are_blocked(void) {
         return _nested_atomic_ctr != 0;

libraries/AP_HAL_VRBRAIN/Scheduler.h

@@ -39,7 +39,7 @@ public:
     void     suspend_timer_procs();
     void     resume_timer_procs();
     void     reboot(bool hold_in_bootloader);
-    void     panic(const prog_char_t *errormsg, ...) NORETURN;
+    void     panic(const prog_char_t *errormsg, ...) FORMAT(2, 3) NORETURN;
 
     bool     in_timerprocess();
     bool     system_initializing();