musl/src/stdio/putc.c
Rich Felker 8fc7b5965a separate getc/putc from fgetc/fputc
for conformance, two functions should not have the same address. a
conforming program could use the addresses of getc and fgetc in ways
that assume they are distinct. normally i would just use a wrapper,
but these functions are so small and performance-critical that an
extra layer of function call could make the one that's a wrapper
nearly twice as slow, so I'm just duplicating the code instead.
2012-10-27 19:52:40 -04:00

13 lines
204 B
C

#include "stdio_impl.h"
int putc(int c, FILE *f)
{
if (f->lock < 0 || !__lockfile(f))
return putc_unlocked(c, f);
c = putc_unlocked(c, f);
__unlockfile(f);
return c;
}
weak_alias(putc, _IO_putc);