Found the following significant warnings:
  ttf2pt1.c:478:12: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ttf2pt1.c:478:19: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ttf2pt1.c:647:33: warning: format specifies type 'int *' but the argument has type 'int' [-Wformat]
  ttf2pt1.c:647:38: warning: format specifies type 'int *' but the argument has type 'int' [-Wformat]
  ttf2pt1.c:2403:3: warning: format specifies type 'short' but the argument has type 'int' [-Wformat]
  pt1.c:307:5: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:307:9: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:307:13: warning: format specifies type 'unsigned int' but the argument has type 'struct gentry *' [-Wformat]
  pt1.c:317:46: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:326:6: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:326:10: warning: format specifies type 'unsigned int' but the argument has type 'struct gentry *' [-Wformat]
  pt1.c:326:20: warning: format specifies type 'unsigned int' but the argument has type 'struct gentry *' [-Wformat]
  pt1.c:334:7: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:334:11: warning: format specifies type 'unsigned int' but the argument has type 'struct gentry *' [-Wformat]
  pt1.c:334:21: warning: format specifies type 'unsigned int' but the argument has type 'struct gentry *' [-Wformat]
  pt1.c:342:7: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:342:14: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:342:18: warning: format specifies type 'unsigned int' but the argument has type 'struct gentry *' [-Wformat]
  pt1.c:763:69: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:913:68: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:1043:64: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:1105:69: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:1203:36: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:1336:63: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:1364:68: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:2921:21: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:2921:25: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:3912:91: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:3912:96: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:3927:87: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:3927:91: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:4059:5: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:4080:15: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:4131:5: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:4152:55: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:4693:13: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:4693:18: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:4693:22: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:5945:45: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:5979:32: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:6183:6: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:7071:58: warning: format specifies type 'unsigned int' but the argument has type 'GENTRY *' (aka 'struct gentry *') [-Wformat]
  pt1.c:7071:62: warning: format specifies type 'unsigned int' but the argument has type 'struct gentry *' [-Wformat]
  pt1.c:7071:72: warning: format specifies type 'unsigned int' but the argument has type 'struct gentry *' [-Wformat]
  pt1.c:7220:44: warning: format specifies type 'short' but the argument has type 'int' [-Wformat]
  ./t1asm.c:173:25: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./t1asm.c:250:24: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./t1asm.c:270:22: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./t1asm.c:295:21: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./t1asm.c:309:26: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./t1asm.c:357:29: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./t1asm.c:375:13: warning: format specifies type 'int' but the argument has type 'unsigned long' [-Wformat]
  ./t1asm.c:384:27: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./t1asm.c:388:24: warning: format specifies type 'int' but the argument has type 'long' [-Wformat]
  ./t1asm.c:428:29: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./t1asm.c:463:18: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./t1asm.c:476:25: 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/Rttf2pt1.Rcheck/00install.out' for details.