Note that for asprintf and vasprintf it is more portable to check for
a -1 return, rather than ret being set to NULL on error. From Otto Moerbeek.
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@ -1,4 +1,4 @@
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.\" $NetBSD: printf.3,v 1.40 2005/07/20 13:31:15 christos Exp $
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.\" $NetBSD: printf.3,v 1.41 2006/03/18 05:46:04 rumble Exp $
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.\"
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.\" Copyright (c) 1990, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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@ -33,7 +33,7 @@
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.\"
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.\" @(#)printf.3 8.1 (Berkeley) 6/4/93
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.\"
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.Dd July 20, 2005
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.Dd March 17, 2006
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.Dt PRINTF 3
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.Os
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.Sh NAME
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@ -132,6 +132,11 @@ If sufficient space cannot be allocated, these functions
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will return -1 and set
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.Fa ret
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to be a NULL pointer.
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Please note that these functions are not standardized, and not all
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implementations can be assumed to set the
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.Fa ret
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argument to NULL on error.
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It is more portable to check for a return value of -1 instead.
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.Pp
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.Fn snprintf
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and
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