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53 lines
1.9 KiB
C
53 lines
1.9 KiB
C
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* Implements the C99 <inttypes.h> interface. */
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#ifndef mozilla_IntegerPrintfMacros_h_
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#define mozilla_IntegerPrintfMacros_h_
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/*
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* These macros should not be used with the NSPR printf-like functions or their
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* users, e.g. mozilla/Logging.h. If you need to use NSPR's facilities, see the
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* comment on supported formats at the top of nsprpub/pr/include/prprf.h.
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*/
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/*
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* scanf is a footgun: if the input number exceeds the bounds of the target
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* type, behavior is undefined (in the compiler sense: that is, this code
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* could overwrite your hard drive with zeroes):
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*
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* uint8_t u;
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* sscanf("256", "%" SCNu8, &u); // BAD
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*
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* For this reason, *never* use the SCN* macros provided by this header!
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*/
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#include <inttypes.h>
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/*
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* Fix up Android's broken [u]intptr_t inttype macros. Android's PRI*PTR
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* macros are defined as "ld", but sizeof(long) is 8 and sizeof(intptr_t)
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* is 4 on 32-bit Android. TestTypeTraits.cpp asserts that these new macro
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* definitions match the actual type sizes seen at compile time.
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*/
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#if defined(ANDROID) && !defined(__LP64__)
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# undef PRIdPTR /* intptr_t */
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# define PRIdPTR "d" /* intptr_t */
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# undef PRIiPTR /* intptr_t */
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# define PRIiPTR "i" /* intptr_t */
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# undef PRIoPTR /* uintptr_t */
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# define PRIoPTR "o" /* uintptr_t */
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# undef PRIuPTR /* uintptr_t */
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# define PRIuPTR "u" /* uintptr_t */
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# undef PRIxPTR /* uintptr_t */
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# define PRIxPTR "x" /* uintptr_t */
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# undef PRIXPTR /* uintptr_t */
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# define PRIXPTR "X" /* uintptr_t */
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#endif
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#endif /* mozilla_IntegerPrintfMacros_h_ */
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