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#include <u.h>
#include <libc.h>
#include "String.h"

void
s_putc(String *s, int c)
{
        if(s->ref > 1)
                sysfatal("can't s_putc a shared string");
        if (s->ptr >= s->end)
                s_grow(s, 2);
        *(s->ptr)++ = c;
}