gprofng: fix build with -std=gnu23

Fix function pointer types accordingly.
Remove unused function pointers.

gprofng/ChangeLog
2024-11-21  Vladimir Mezentsev  <vladimir.mezentsev@oracle.com>

	PR gprofng/32374
	PR gprofng/32373
	* common/cpuid.c: Define ATTRIBUTE_UNUSED if necessary.
	* libcollector/libcol_util.c (sysinfo): Remove unused pointer.
	* src/collector_module.h: Likewise.
	* libcollector/dispatcher.c (setitimer): Fix prototype.
	* libcollector/linetrace.c (system, grantpt, ptsname): Likewise.
	* testsuite/gprofng.display/mttest/mttest.c (dump_arrays): Likewise.
	* testsuite/gprofng.display/synprog/endcases.c (xinline_code,
	s_inline_code): Likewise.
	* testsuite/gprofng.display/synprog/inc_inline.h (ext_inline_code):
	Likewise.
	* testsuite/gprofng.display/synprog/synprog.c (doabort): Rename nullptr.

gprofng/common/cpuid.c

@@ -21,7 +21,9 @@
 #if defined(__i386__) || defined(__x86_64)
 #include <cpuid.h>  /* GCC-provided */
 #elif defined(__aarch64__)
+#if !defined(ATTRIBUTE_UNUSED)
 #define ATTRIBUTE_UNUSED __attribute__((unused))
+#endif
 
 static inline uint_t __attribute_const__
 __get_cpuid (unsigned int op ATTRIBUTE_UNUSED, unsigned int *eax,

gprofng/libcollector/dispatcher.c

@@ -1280,4 +1280,4 @@ __collector_ext_clone_pthread (int (*fn)(void *), void *child_stack, int flags,
 // weak symbols:
 int sigprocmask (int, const sigset_t*, sigset_t*) __attribute__ ((weak, alias ("__collector_sigprocmask")));
 int thr_sigsetmask (int, const sigset_t*, sigset_t*) __attribute__ ((weak, alias ("__collector_thr_sigsetmask")));
-int setitimer () __attribute__ ((weak, alias ("_setitimer")));
+__typeof(setitimer) setitimer __attribute__ ((weak, alias ("_setitimer")));

gprofng/libcollector/libcol_util.c

@@ -1427,15 +1427,6 @@ __collector_util_init ()
       err = COL_ERROR_UTIL_INIT;
     }
 
-  ptr = dlsym (libc, "sysinfo");
-  if (ptr)
-    __collector_util_funcs.sysinfo = (long (*)())ptr;
-  else
-    {
-      CALL_UTIL (fprintf)(stderr, "collector_util_init COL_ERROR_UTIL_INIT sysinfo: %s\n", dlerror ());
-      err = COL_ERROR_UTIL_INIT;
-    }
-
   ptr = dlsym (libc, "clearenv");
   if (ptr)
     __collector_util_funcs.clearenv = (int(*)())ptr;

gprofng/libcollector/linetrace.c

@@ -1527,7 +1527,7 @@ DCL_FUNC_VER (DCL_POSIX_SPAWNP, posix_spawnp_2_2, posix_spawnp@GLIBC_2.2)
 DCL_POSIX_SPAWNP (posix_spawnp)
 
 /*------------------------------------------------------------- system */
-int system () __attribute__ ((weak, alias ("__collector_system")));
+int system (const char *cmd) __attribute__ ((weak, alias ("__collector_system")));
 
 int
 __collector_system (const char *cmd)
@@ -1582,10 +1582,10 @@ DCL_FUNC_VER (DCL_POPEN, popen_2_0, popen@GLIBC_2.0)
 DCL_POPEN (popen)
 
 /*------------------------------------------------------------- grantpt */
-int grantpt () __attribute__ ((weak, alias ("__collector_grantpt")));
+int grantpt (int fildes) __attribute__ ((weak, alias ("__collector_grantpt")));
 
 int
-__collector_grantpt (const int fildes)
+__collector_grantpt (int fildes)
 {
   if (NULL_PTR (grantpt))
     init_lineage_intf ();
@@ -1607,10 +1607,10 @@ __collector_grantpt (const int fildes)
 }
 
 /*------------------------------------------------------------- ptsname */
-char *ptsname () __attribute__ ((weak, alias ("__collector_ptsname")));
+char *ptsname (int fildes) __attribute__ ((weak, alias ("__collector_ptsname")));
 
 char *
-__collector_ptsname (const int fildes)
+__collector_ptsname (int fildes)
 {
   if (NULL_PTR (ptsname))
     init_lineage_intf ();

gprofng/src/collector_module.h

@@ -107,7 +107,6 @@ typedef struct CollectorUtilFuncs
   int (*symlink)(const char *s1, const char *s2);
   int (*syscall)(int number, ...);
   long (*sysconf)(int name);
-  long (*sysinfo)(int command, char *buf, long count);
   time_t (*time)(time_t *tloc);
   int (*unsetenv)(const char *name);
   int (*vsnprintf)(char *str, size_t size, const char *format, ...);

gprofng/testsuite/gprofng.display/mttest/mttest.c

@@ -171,7 +171,7 @@ void computeJ (workStruct_t *x);
 void computeK (workStruct_t *x);
 void addone (workCtr_t *x);
 void init_arrays (int strat);
-void dump_arrays ();
+void dump_arrays (hrtime_t real, hrtime_t cpu, int case_index);
 void *do_work (void *v);
 void thread_work ();
 void nothreads (Workblk *array, struct scripttab *k);

gprofng/testsuite/gprofng.display/synprog/endcases.c

@@ -40,8 +40,8 @@ static void s_inline_code (int);
 void ext_inline_code (int);
 
 #ifndef NO_INLINE
-void xinline_code () __attribute__ ((always_inline));
-void s_inline_code () __attribute__ ((always_inline));
+void xinline_code (int) __attribute__ ((always_inline));
+void s_inline_code (int) __attribute__ ((always_inline));
 #endif
 
 #include "inc_inline.h"

gprofng/testsuite/gprofng.display/synprog/inc_inline.h

@@ -19,7 +19,7 @@
    MA 02110-1301, USA.  */
 
 #ifndef NO_INLINE
-void ext_inline_code() __attribute__ ((always_inline));
+void ext_inline_code(int) __attribute__ ((always_inline));
 #endif
 
 void

gprofng/testsuite/gprofng.display/synprog/synprog.c

@@ -528,14 +528,14 @@ reapchildren ()
 int
 doabort (int k)
 {
-  char *nullptr = NULL;
+  char *p = NULL;
   char c;
 
   /* Log the event */
   wlog ("start of doabort", NULL);
 
   /* and dereference a NULL */
-  c = *nullptr;
+  c = *p;
 
   /* this should never be reached */
   return (int) c;