Found the following significant warnings:
  functions.c:101:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  functions.c:154:11: warning: passing arguments to 'comcbr' without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  functions.c:75:6: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  functions.c:220:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  functions.c:221:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  functions.c:258:13: warning: passing arguments to 'reflect' without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  functions.c:259:13: warning: passing arguments to 'reflect' without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  functions.c:261:15: warning: passing arguments to 'commul' without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  functions.c:271:13: warning: passing arguments to 'reflect' without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  functions.c:272:13: warning: passing arguments to 'reflect' without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  functions.c:274:15: warning: passing arguments to 'commul' without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  functions.c:285:5: warning: passing arguments to 'reflect' without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  functions.c:286:5: warning: passing arguments to 'reflect' without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  functions.c:189:6: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  functions.c:295:6: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  wrow.c:54:14: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  wrow.c:108:13: warning: passing arguments to 'conbarow' without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  wrow.c:34:6: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  wrow.c:157:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  wrow.c:188:38: warning: passing arguments to 'reflect' without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  wrow.c:202:38: warning: passing arguments to 'reflect' without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  wrow.c:214:5: warning: passing arguments to 'reflect' without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  wrow.c:134:6: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  wrow.c:219:5: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
See ‘/data/gannet/ripley/R/packages/tests-clang/waveband.Rcheck/00install.out’ for details.