2000-08-11 22:00:49 +00:00
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/*
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2002-08-02 23:36:07 +00:00
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* $Id: snprintf.h,v 1.8 2002/08/02 23:36:07 jmayer Exp $
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2000-08-11 22:00:49 +00:00
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*/
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2000-08-11 13:37:21 +00:00
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#ifndef __ETHEREAL_SNPRINTF_H__
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#define __ETHEREAL_SNPRINTF_H__
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Some compilers, e.g. Microsoft Visual C++, don't define __STDC__ unless
extensions to ANSI C are disabled if they may cause strictly conforming
programs not to compile, or to work differently if those extensions are
enabled. (Other compilers #define it as 0, e.g. Sun's and, I think,
other AT&T-derived compilers; still others cheerfully define it as 1
even when those extensions are enabled, e.g. GCC.)
As such, checking whether __STDC__ is defined, or is defined as a
non-zero value, isn't the right way to check whether function prototypes
are supported; MSVC++ 6.0 supports them, but, by default, leaves
extensions of the sort described above enabled, and thus doesn't define
__STDC__. This means that the compiler warns about arguments to
"snprintf()" when compiling it, as the declaration is an old-style
declaration.
As Ethereal uses function prototypes, there's not much point in making
it possible for its private "snprintf()" to be compiled or used when
function prototypes aren't supported; just get rid of the tests for
__STDC__, so that it's compiled with function prototypes regardless of
whether __STDC__ is defined or not.
While we're at it, have "snprintf()" give it a "__attribute__((format
(printf, 3, 4))))" when compiled by GCC 2.x or later, so that
format/argument checks can be done even on platforms lacking
"snprintf()".
svn path=/trunk/; revision=2689
2000-11-21 21:24:52 +00:00
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#if defined(HAVE_STDARG_H)
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2000-08-11 13:37:21 +00:00
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# include <stdarg.h>
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#else
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# include <varargs.h>
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#endif
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2002-07-19 12:59:21 +00:00
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/* for size_t */
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1998-10-13 07:03:37 +00:00
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extern int vsnprintf(char *string, size_t length, const char * format,
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va_list args);
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1998-09-16 02:39:15 +00:00
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2001-07-22 10:25:50 +00:00
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#if __GNUC__ >= 2
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Some compilers, e.g. Microsoft Visual C++, don't define __STDC__ unless
extensions to ANSI C are disabled if they may cause strictly conforming
programs not to compile, or to work differently if those extensions are
enabled. (Other compilers #define it as 0, e.g. Sun's and, I think,
other AT&T-derived compilers; still others cheerfully define it as 1
even when those extensions are enabled, e.g. GCC.)
As such, checking whether __STDC__ is defined, or is defined as a
non-zero value, isn't the right way to check whether function prototypes
are supported; MSVC++ 6.0 supports them, but, by default, leaves
extensions of the sort described above enabled, and thus doesn't define
__STDC__. This means that the compiler warns about arguments to
"snprintf()" when compiling it, as the declaration is an old-style
declaration.
As Ethereal uses function prototypes, there's not much point in making
it possible for its private "snprintf()" to be compiled or used when
function prototypes aren't supported; just get rid of the tests for
__STDC__, so that it's compiled with function prototypes regardless of
whether __STDC__ is defined or not.
While we're at it, have "snprintf()" give it a "__attribute__((format
(printf, 3, 4))))" when compiled by GCC 2.x or later, so that
format/argument checks can be done even on platforms lacking
"snprintf()".
svn path=/trunk/; revision=2689
2000-11-21 21:24:52 +00:00
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extern int snprintf(char *string, size_t length, const char * format, ...)
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__attribute__((format (printf, 3, 4)));
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1998-09-16 02:39:15 +00:00
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#else
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Some compilers, e.g. Microsoft Visual C++, don't define __STDC__ unless
extensions to ANSI C are disabled if they may cause strictly conforming
programs not to compile, or to work differently if those extensions are
enabled. (Other compilers #define it as 0, e.g. Sun's and, I think,
other AT&T-derived compilers; still others cheerfully define it as 1
even when those extensions are enabled, e.g. GCC.)
As such, checking whether __STDC__ is defined, or is defined as a
non-zero value, isn't the right way to check whether function prototypes
are supported; MSVC++ 6.0 supports them, but, by default, leaves
extensions of the sort described above enabled, and thus doesn't define
__STDC__. This means that the compiler warns about arguments to
"snprintf()" when compiling it, as the declaration is an old-style
declaration.
As Ethereal uses function prototypes, there's not much point in making
it possible for its private "snprintf()" to be compiled or used when
function prototypes aren't supported; just get rid of the tests for
__STDC__, so that it's compiled with function prototypes regardless of
whether __STDC__ is defined or not.
While we're at it, have "snprintf()" give it a "__attribute__((format
(printf, 3, 4))))" when compiled by GCC 2.x or later, so that
format/argument checks can be done even on platforms lacking
"snprintf()".
svn path=/trunk/; revision=2689
2000-11-21 21:24:52 +00:00
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extern int snprintf(char *string, size_t length, const char * format, ...);
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1998-09-16 02:39:15 +00:00
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#endif
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2000-08-11 13:37:21 +00:00
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#endif
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