mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-01 06:35:42 +00:00
41 lines
1.5 KiB
C
41 lines
1.5 KiB
C
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
|
|
* You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
/* Implements the C99 <inttypes.h> interface, minus the SCN* format macros. */
|
|
|
|
#ifndef mozilla_IntegerPrintfMacros_h_
|
|
#define mozilla_IntegerPrintfMacros_h_
|
|
|
|
/*
|
|
* MSVC++ doesn't include <inttypes.h>, even in versions shipping <stdint.h>, so
|
|
* we have to reimplement it there. Note: <inttypes.h> #includes <stdint.h>.
|
|
*
|
|
* Note that this header DOES NOT implement <inttypes.h>'s scanf macros. MSVC's
|
|
* scanf doesn't have sufficient format specifier support to implement them
|
|
* (specifically, to implement scanning into an 8-bit location).
|
|
*
|
|
* http://stackoverflow.com/questions/3036396/scanfd-char-char-as-int-format-string
|
|
*
|
|
* Moreover, scanf is a footgun: if the input number exceeds the bounds of the
|
|
* target type, behavior is undefined (in the compiler sense: that is, this code
|
|
* could overwrite your hard drive with zeroes):
|
|
*
|
|
* uint8_t u;
|
|
* sscanf("256", "%" SCNu8, &u); // BAD
|
|
*
|
|
* This header will sometimes provide SCN* macros, by dint of being implemented
|
|
* using <inttypes.h>. But for these reasons, *never* use them!
|
|
*/
|
|
|
|
#if defined(MOZ_CUSTOM_INTTYPES_H)
|
|
# include MOZ_CUSTOM_INTTYPES_H
|
|
#elif defined(_MSC_VER)
|
|
# include "mozilla/MSIntTypes.h"
|
|
#else
|
|
# include <inttypes.h>
|
|
#endif
|
|
|
|
#endif /* mozilla_IntegerPrintfMacros_h_ */
|