src/stdio/fputc.c

   1 #include "stdio_impl.h"
   2
   3 int fputc(int c, FILE *f)
   4 {
   5         if (f->lock < 0 || !__lockfile(f))
   6                 return putc_unlocked(c, f);
   7         c = putc_unlocked(c, f);
   8         __unlockfile(f);
   9         return c;
  10 }