Found the following significant warnings:
  ./randomForestSRC.h:412:33: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:413:45: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:609:15: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:610:16: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:612:24: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:613:27: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:924:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:1002:27: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:1163:40: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:1164:41: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:1355:33: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:1509:22: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:1514:22: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:1515:37: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:1874:39: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:1875:36: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:1888:17: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:1895:22: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:1906:33: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:1907:35: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:1908:34: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:1909:36: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:1910:34: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:1911:36: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:2003:13: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:2004:23: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:2220:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:2222:24: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./randomForestSRC.h:2239:23: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:3073:15: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:3075:16: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:3079:24: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:3180:27: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:6468:33: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:6480:45: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:7682:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:9276:27: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:11617:40: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:11621:41: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./splitCustom.h:22:29: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:16021:33: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:21043:22: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:21089:22: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:21475:37: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:28671:39: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:28988:17: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:29438:33: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:29485:35: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:29504:34: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:29517:36: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:29522:34: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:29545:36: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:29554:22: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:31136:13: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:31199:23: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:34940:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:34953:24: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  randomForestSRC.c:35129:23: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  splitCustom.c:22:29: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
See ‘/home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/randomForestSRC.Rcheck/00install.out’ for details.
* used C compiler: ‘Debian clang version 15.0.6’