8295146: Clean up native code with newer C/C++ language features

src/hotspot/os/linux/os_perf_linux.cpp

@@ -230,7 +230,8 @@ static double get_cpu_load(int which_logical_cpu, CPUPerfCounters* counters, dou
 /** reads /proc/<pid>/stat data, with some checks and some skips.
  *  Ensure that 'fmt' does _NOT_ contain the first two "%d %s"
  */
-SCANF_ARGS(2, 0) static int vread_statdata(const char* procfile, _SCANFMT_ const char* fmt, va_list args) {
+SCANF_ARGS(2, 0)
+static int vread_statdata(const char* procfile, _SCANFMT_ const char* fmt, va_list args) {
   FILE*f;
   int n;
   char buf[2048];
@@ -259,7 +260,8 @@ SCANF_ARGS(2, 0) static int vread_statdata(const char* procfile, _SCANFMT_ const
   return n;
 }
 
-SCANF_ARGS(2, 3) static int read_statdata(const char* procfile, _SCANFMT_ const char* fmt, ...) {
+SCANF_ARGS(2, 3)
+static int read_statdata(const char* procfile, _SCANFMT_ const char* fmt, ...) {
   int   n;
   va_list args;
 
@@ -394,7 +396,8 @@ static double get_cpu_load(int which_logical_cpu, CPUPerfCounters* counters, dou
   return user_load;
 }
 
-SCANF_ARGS(1, 2) static int parse_stat(_SCANFMT_ const char* fmt, ...) {
+SCANF_ARGS(1, 2)
+static int parse_stat(_SCANFMT_ const char* fmt, ...) {
   FILE *f;
   va_list args;
 

src/hotspot/share/utilities/debug.hpp

@@ -168,7 +168,8 @@ void report_vm_error(const char* file, int line, const char* error_msg,
                      const char* detail_fmt, ...);
 void report_vm_status_error(const char* file, int line, const char* error_msg,
                             int status, const char* detail);
-ATTRIBUTE_PRINTF(4, 5) void report_fatal(VMErrorType error_type, const char* file, int line, const char* detail_fmt, ...);
+ATTRIBUTE_PRINTF(4, 5)
+void report_fatal(VMErrorType error_type, const char* file, int line, const char* detail_fmt, ...);
 ATTRIBUTE_PRINTF(5, 6)
 void report_vm_out_of_memory(const char* file, int line, size_t size, VMErrorType vm_err_type,
                              const char* detail_fmt, ...);