Found the following significant warnings:
  ./ConfigFile.h:65:32: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./ConfigFile.h:145:14: warning: address of stack memory associated with local variable 'output' returned [-Wreturn-stack-address]
  ./ConfigFile.h:158:15: warning: address of stack memory associated with local variable 'output' returned [-Wreturn-stack-address]
  ./problem.h:52:10: warning: address of stack memory associated with local variable 'msg' returned [-Wreturn-stack-address]
  ./newutil.h:95:30: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:35:53: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:35:70: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:39:32: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:40:7: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:42:47: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:43:14: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:45:46: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:46:51: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:46:72: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:49:20: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:52:18: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:52:36: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:57:48: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:58:67: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:67:36: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:74:28: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:78:56: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:79:9: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:80:4: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:82:13: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:83:55: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:108:38: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:110:62: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:121:22: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:150:44: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:211:22: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:213:38: warning: invalid UTF-8 in comment [-Winvalid-utf8]
  ./config.h:130:11: warning: address of stack memory associated with local variable 'output' returned [-Wreturn-stack-address]
  sade.cc:146:31: warning: implicit conversion from 'double' to 'int' changes value from 0.3 to 0 [-Wliteral-conversion]
See ‘/data/gannet/ripley/R/packages/tests-clang/Rmalschains.Rcheck/00install.out’ for details.