Found the following significant warnings:
  mmap.c:486:45: warning: format specifies type 'int' but the argument has type 'double' [-Wformat]
  mmap.c:497:45: warning: format specifies type 'int' but the argument has type 'double' [-Wformat]
  mmap.c:514:43: warning: format specifies type 'int' but the argument has type 'double' [-Wformat]
  mmap.c:530:43: warning: format specifies type 'int' but the argument has type 'double' [-Wformat]
  mmap.c:549:43: warning: format specifies type 'int' but the argument has type 'double' [-Wformat]
  mmap.c:571:43: warning: format specifies type 'int' but the argument has type 'double' [-Wformat]
  mmap.c:588:43: warning: format specifies type 'int' but the argument has type 'double' [-Wformat]
  mmap.c:611:43: warning: format specifies type 'int' but the argument has type 'double' [-Wformat]
  mmap.c:628:45: warning: format specifies type 'int' but the argument has type 'long' [-Wformat]
  mmap.c:640:43: warning: format specifies type 'int' but the argument has type 'double' [-Wformat]
  mmap.c:661:39: warning: format specifies type 'int' but the argument has type 'double' [-Wformat]
  mmap.c:707:39: warning: format specifies type 'int' but the argument has type 'double' [-Wformat]
  mmap.c:981:43: warning: format specifies type 'int' but the argument has type 'long' [-Wformat]
  mmap.c:990:43: warning: format specifies type 'int' but the argument has type 'double' [-Wformat]
  mmap.c:1009:43: warning: format specifies type 'int' but the argument has type 'long' [-Wformat]
  mmap.c:1018:43: warning: format specifies type 'int' but the argument has type 'double' [-Wformat]
  mmap.c:1027:41: warning: format specifies type 'int' but the argument has type 'double' [-Wformat]
  mmap.c:1035:43: warning: format specifies type 'int' but the argument has type 'double' [-Wformat]
  mmap.c:1049:41: warning: format specifies type 'int' but the argument has type 'long' [-Wformat]
  mmap.c:1059:41: warning: format specifies type 'int' but the argument has type 'long' [-Wformat]
  mmap.c:1067:41: warning: format specifies type 'int' but the argument has type 'long' [-Wformat]
See ‘/data/gannet/ripley/R/packages/tests-clang/mmap.Rcheck/00install.out’ for details.
* used C compiler: ‘clang version 17.0.5’