gcc -std=c11 -pedantic -D_ANSI_SOURCE -fno-common \
   -fno-diagnostics-show-option -fsanitize=undefined -Wbad-function-cast \
   -Wstrict-prototypes -Wall -Wextra -Wformat-nonliteral -Wcast-align \
   -Winline -Wundef -Wcast-qual -Wshadow -Wconversion -ffloat-store