HelenOS sources

STRING_ARG         40 boot/generic/include/macros.h #define STRING_ARG(arg)  #arg
STRING_ARG        133 kernel/generic/include/macros.h #define STRING_ARG(arg)  #arg
STRING_ARG         48 uspace/lib/c/include/macros.h #define STRING_ARG(arg)  #arg
STRING_ARG         48 uspace/lib/posix/include/libc/macros.h #define STRING_ARG(arg)  #arg