Plan 9 from Bell Labs’s /usr/web/sources/plan9/sys/src/libc/fmt/smprint.c
#include <u.h> #include <libc.h> char* smprint(char *fmt, ...) { va_list args; char *p; va_start(args, fmt); p = vsmprint(fmt, args); va_end(args); setmalloctag(p, getcallerpc(&fmt)); return p; }