Solve errors/warnings given by clang (issue #282)

atopsar.c

@@ -85,7 +85,7 @@ struct pridef {
 	char    wanted;         /* selected option (boolean)              */
 	char    *cntcat;        /* used categories of counters            */
 	char    flag;           /* flag on command line                   */
-	void    (*prihead)();   /* print header of list                   */
+	void    (*prihead)(int, int, int);   /* print header of list      */
 	int     (*priline)(struct sstat *, struct tstat *, struct tstat **,
 		           int, time_t, time_t, time_t,
 		           int, int, int, char *,

drawbar.c

@@ -103,6 +103,7 @@
 // the other.
 /////////////////////////////////////////////////////////////////////////////
 
+#include <sys/types.h>
 #include <curses.h>
 #include <locale.h>
 #include <string.h>

photoproc.c

@@ -207,19 +207,22 @@ photoproc(struct tstat *tasklist, int maxtask)
 
 		if ( !procstat(curtask, bootepoch, 1)) /* from /proc/pid/stat */
 		{
-			if ( chdir("..") == -1);
+			if ( chdir("..") == -1)
+				;
 			continue;
 		}
 
 		if ( !procstatus(curtask) )	/* from /proc/pid/status  */
 		{
-			if ( chdir("..") == -1);
+			if ( chdir("..") == -1)
+				;
 			continue;
 		}
 
 		if ( !procio(curtask) )		/* from /proc/pid/io      */
 		{
-			if ( chdir("..") == -1);
+			if ( chdir("..") == -1)
+				;
 			continue;
 		}
 
@@ -316,7 +319,8 @@ photoproc(struct tstat *tasklist, int maxtask)
 				*/
 				if( dirtask == NULL )
 				{
-					if(chdir("../..") == -1);
+					if(chdir("../..") == -1)
+						;
 					continue;
 				}
 
@@ -333,19 +337,22 @@ photoproc(struct tstat *tasklist, int maxtask)
 
 					if ( !procstat(curthr, bootepoch, 0))
 					{
-						if ( chdir("..") == -1);
+						if ( chdir("..") == -1)
+							;
 						continue;
 					}
 
 					if ( !procstatus(curthr) )
 					{
-						if ( chdir("..") == -1);
+						if ( chdir("..") == -1)
+							;
 						continue;
 					}
 
 					if ( !procio(curthr) )
 					{
-						if ( chdir("..") == -1);
+						if ( chdir("..") == -1)
+							;
 						continue;
 					}
 
@@ -401,18 +408,21 @@ photoproc(struct tstat *tasklist, int maxtask)
 					tval++;	    /* increment thread-level */
 					cur_nth++;  /* increment # threads    */
 
-					if ( chdir("..") == -1); /* thread */
+					if ( chdir("..") == -1)
+						; /* thread */
 				}
 
 				closedir(dirtask);
-				if ( chdir("..") == -1); /* leave task */
+				if ( chdir("..") == -1)
+					; /* leave task */
 
 				// calibrate number of threads
 				curtask->gen.nthr = cur_nth;
 			}
 		}
 
-		if ( chdir("..") == -1); /* leave process-level directry */
+		if ( chdir("..") == -1)
+			; /* leave process-level directry */
 	}
 
 	closedir(dirp);

photosyst.h

@@ -433,7 +433,7 @@ struct perllc {
 };
 
 struct llcstat {
-	unsigned char	nrllcs;	        // total number of LLC
+	int		nrllcs;	        // total number of LLC
 	struct perllc   perllc[MAXLLC];
 };
 

utsnames.c

@@ -193,7 +193,8 @@ resetutsname(void)
 
 		regainrootprivs();
 
-		if (setns(mypidfd, CLONE_NEWUTS) == -1);
+		if (setns(mypidfd, CLONE_NEWUTS) == -1)
+			;
 
 		if (! droprootprivs())
 			mcleanstop(42, "failed to drop root privs\n");

various.c

@@ -44,7 +44,7 @@
 #include <stdarg.h>
 #include <string.h>
 #include <fcntl.h>
-#include <wait.h>
+#include <sys/wait.h>
 #include <unistd.h>
 
 #include "atop.h"