Sanitize undefined behavior. Tidy whitespace.

Author: Rupt

Makefile

@@ -1,12 +1,14 @@
 CC=cc
 CXX=c++
-CFLAGS=-Wall -Wextra -pedantic -Werror
+CFLAGS=-Wall -Wextra -pedantic -Werror -fsanitize=undefined
+
 
 options:
 @echo "CC=${CC}"
 @echo "CXX=${CXX}"
 @echo "CFLAGS=${CFLAGS}"
 
+
 clean:
 rm -f test