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#include <u.h>
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#include <libc.h>
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static void
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_sysfatalimpl(char *fmt, va_list arg)
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{
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	char buf[1024];
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	vseprint(buf, buf+sizeof(buf), fmt, arg);
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	if(argv0)
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		fprint(2, "%s: %s\n", argv0, buf);
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	else
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		fprint(2, "%s\n", buf);
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#undef write
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write(2, buf, strlen(buf));
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write(2, "\n", 1);
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	panic("sysfatal");
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}
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void (*_sysfatal)(char *fmt, va_list arg) = _sysfatalimpl;
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void
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sysfatal(char *fmt, ...)
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{
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	va_list arg;
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	va_start(arg, fmt);
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	(*_sysfatal)(fmt, arg);
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	va_end(arg);
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}