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TestIntegerPrintfMacros.cpp
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/* -*- 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/. */
#include "mozilla/Assertions.h"
#include "mozilla/IntegerPrintfMacros.h" // this must pick up <stdint.h>
#include <stddef.h>
#include <stdio.h>
#include <string.h>
/* Output array and poisoning method shared by all tests. */
static char output[32];
static void
PoisonOutput()
{
memset(output, 0xDA, sizeof(output));
}
/*
* The fprintf macros for signed integers are:
*
* PRIdN PRIdLEASTN PRIdFASTN PRIdMAX PRIdPTR
* PRIiN PRIiLEASTN PRIiFASTN PRIiMAX PRIiPTR
*
* In these names N is the width of the type as described in C99 7.18.1.
*/
static void
TestPrintSigned8()
{
PoisonOutput();
sprintf(output, "%" PRId8, int8_t(-17));
MOZ_ASSERT(!strcmp(output, "-17"));
PoisonOutput();
sprintf(output, "%" PRIi8, int8_t(42));
MOZ_ASSERT(!strcmp(output, "42"));
}
static void
TestPrintSigned16()
{
PoisonOutput();
sprintf(output, "%" PRId16, int16_t(-289));
MOZ_ASSERT(!strcmp(output, "-289"));
PoisonOutput();
sprintf(output, "%" PRIi16, int16_t(728));
MOZ_ASSERT(!strcmp(output, "728"));
}
static void
TestPrintSigned32()
{
PoisonOutput();
sprintf(output, "%" PRId32, int32_t(-342178));
MOZ_ASSERT(!strcmp(output, "-342178"));
PoisonOutput();
sprintf(output, "%" PRIi32, int32_t(5719283));
MOZ_ASSERT(!strcmp(output, "5719283"));
}
static void
TestPrintSigned64()
{
PoisonOutput();
sprintf(output, "%" PRId64, int64_t(-INT64_C(432157943248732)));
MOZ_ASSERT(!strcmp(output, "-432157943248732"));
PoisonOutput();
sprintf(output, "%" PRIi64, int64_t(INT64_C(325719232983)));
MOZ_ASSERT(!strcmp(output, "325719232983"));
}
static void
TestPrintSignedN()
{
TestPrintSigned8();
TestPrintSigned16();
TestPrintSigned32();
TestPrintSigned64();
}
static void
TestPrintSignedLeast8()
{
PoisonOutput();
sprintf(output, "%" PRIdLEAST8, int_least8_t(-17));
MOZ_ASSERT(!strcmp(output, "-17"));
PoisonOutput();
sprintf(output, "%" PRIiLEAST8, int_least8_t(42));
MOZ_ASSERT(!strcmp(output, "42"));
}
static void
TestPrintSignedLeast16()
{
PoisonOutput();
sprintf(output, "%" PRIdLEAST16, int_least16_t(-289));
MOZ_ASSERT(!strcmp(output, "-289"));
PoisonOutput();
sprintf(output, "%" PRIiLEAST16, int_least16_t(728));
MOZ_ASSERT(!strcmp(output, "728"));
}
static void
TestPrintSignedLeast32()
{
PoisonOutput();
sprintf(output, "%" PRIdLEAST32, int_least32_t(-342178));
MOZ_ASSERT(!strcmp(output, "-342178"));
PoisonOutput();
sprintf(output, "%" PRIiLEAST32, int_least32_t(5719283));
MOZ_ASSERT(!strcmp(output, "5719283"));
}
static void
TestPrintSignedLeast64()
{
PoisonOutput();
sprintf(output, "%" PRIdLEAST64, int_least64_t(-INT64_C(432157943248732)));
MOZ_ASSERT(!strcmp(output, "-432157943248732"));
PoisonOutput();
sprintf(output, "%" PRIiLEAST64, int_least64_t(INT64_C(325719232983)));
MOZ_ASSERT(!strcmp(output, "325719232983"));
}
static void
TestPrintSignedLeastN()
{
TestPrintSignedLeast8();
TestPrintSignedLeast16();
TestPrintSignedLeast32();
TestPrintSignedLeast64();
}
static void
TestPrintSignedFast8()
{
PoisonOutput();
sprintf(output, "%" PRIdFAST8, int_fast8_t(-17));
MOZ_ASSERT(!strcmp(output, "-17"));
PoisonOutput();
sprintf(output, "%" PRIiFAST8, int_fast8_t(42));
MOZ_ASSERT(!strcmp(output, "42"));
}
static void
TestPrintSignedFast16()
{
PoisonOutput();
sprintf(output, "%" PRIdFAST16, int_fast16_t(-289));
MOZ_ASSERT(!strcmp(output, "-289"));
PoisonOutput();
sprintf(output, "%" PRIiFAST16, int_fast16_t(728));
MOZ_ASSERT(!strcmp(output, "728"));
}
static void
TestPrintSignedFast32()
{
PoisonOutput();
sprintf(output, "%" PRIdFAST32, int_fast32_t(-342178));
MOZ_ASSERT(!strcmp(output, "-342178"));
PoisonOutput();
sprintf(output, "%" PRIiFAST32, int_fast32_t(5719283));
MOZ_ASSERT(!strcmp(output, "5719283"));
}
static void
TestPrintSignedFast64()
{
PoisonOutput();
sprintf(output, "%" PRIdFAST64, int_fast64_t(-INT64_C(432157943248732)));
MOZ_ASSERT(!strcmp(output, "-432157943248732"));
PoisonOutput();
sprintf(output, "%" PRIiFAST64, int_fast64_t(INT64_C(325719232983)));
MOZ_ASSERT(!strcmp(output, "325719232983"));
}
static void
TestPrintSignedFastN()
{
TestPrintSignedFast8();
TestPrintSignedFast16();
TestPrintSignedFast32();
TestPrintSignedFast64();
}
static void
TestPrintSignedMax()
{
PoisonOutput();
sprintf(output, "%" PRIdMAX, intmax_t(-INTMAX_C(432157943248732)));
MOZ_ASSERT(!strcmp(output, "-432157943248732"));
PoisonOutput();
sprintf(output, "%" PRIiMAX, intmax_t(INTMAX_C(325719232983)));
MOZ_ASSERT(!strcmp(output, "325719232983"));
}
static void
TestPrintSignedPtr()
{
PoisonOutput();
sprintf(output, "%" PRIdPTR, intptr_t(reinterpret_cast<void*>(12345678)));
MOZ_ASSERT(!strcmp(output, "12345678"));
PoisonOutput();
sprintf(output, "%" PRIiPTR, intptr_t(reinterpret_cast<void*>(87654321)));
MOZ_ASSERT(!strcmp(output, "87654321"));
}
static void
TestPrintSigned()
{
TestPrintSignedN();
TestPrintSignedLeastN();
TestPrintSignedFastN();
TestPrintSignedMax();
TestPrintSignedPtr();
}
/*
* The fprintf macros for unsigned integers are:
*
* PRIoN PRIoLEASTN PRIoFASTN PRIoMAX PRIoPTR
* PRIuN PRIuLEASTN PRIuFASTN PRIuMAX PRIuPTR
* PRIxN PRIxLEASTN PRIxFASTN PRIxMAX PRIxPTR
* PRIXN PRIXLEASTN PRIXFASTN PRIXMAX PRIXPTR
*
* In these names N is the width of the type as described in C99 7.18.1.
*/
static void
TestPrintUnsigned8()
{
PoisonOutput();
sprintf(output, "%" PRIo8, uint8_t(042));
MOZ_ASSERT(!strcmp(output, "42"));
PoisonOutput();
sprintf(output, "%" PRIu8, uint8_t(17));
MOZ_ASSERT(!strcmp(output, "17"));
PoisonOutput();
sprintf(output, "%" PRIx8, uint8_t(0x2a));
MOZ_ASSERT(!strcmp(output, "2a"));
PoisonOutput();
sprintf(output, "%" PRIX8, uint8_t(0xCD));
MOZ_ASSERT(!strcmp(output, "CD"));
}
static void
TestPrintUnsigned16()
{
PoisonOutput();
sprintf(output, "%" PRIo16, uint16_t(04242));
MOZ_ASSERT(!strcmp(output, "4242"));
PoisonOutput();
sprintf(output, "%" PRIu16, uint16_t(1717));
MOZ_ASSERT(!strcmp(output, "1717"));
PoisonOutput();
sprintf(output, "%" PRIx16, uint16_t(0x2a2a));
MOZ_ASSERT(!strcmp(output, "2a2a"));
PoisonOutput();
sprintf(output, "%" PRIX16, uint16_t(0xCDCD));
MOZ_ASSERT(!strcmp(output, "CDCD"));
}
static void
TestPrintUnsigned32()
{
PoisonOutput();
sprintf(output, "%" PRIo32, uint32_t(0424242));
MOZ_ASSERT(!strcmp(output, "424242"));
PoisonOutput();
sprintf(output, "%" PRIu32, uint32_t(171717));
MOZ_ASSERT(!strcmp(output, "171717"));
PoisonOutput();
sprintf(output, "%" PRIx32, uint32_t(0x2a2a2a));
MOZ_ASSERT(!strcmp(output, "2a2a2a"));
PoisonOutput();
sprintf(output, "%" PRIX32, uint32_t(0xCDCDCD));
MOZ_ASSERT(!strcmp(output, "CDCDCD"));
}
static void
TestPrintUnsigned64()
{
PoisonOutput();
sprintf(output, "%" PRIo64, uint64_t(UINT64_C(0424242424242)));
MOZ_ASSERT(!strcmp(output, "424242424242"));
PoisonOutput();
sprintf(output, "%" PRIu64, uint64_t(UINT64_C(17171717171717171717)));
MOZ_ASSERT(!strcmp(output, "17171717171717171717"));
PoisonOutput();
sprintf(output, "%" PRIx64, uint64_t(UINT64_C(0x2a2a2a2a2a2a2a)));
MOZ_ASSERT(!strcmp(output, "2a2a2a2a2a2a2a"));
PoisonOutput();
sprintf(output, "%" PRIX64, uint64_t(UINT64_C(0xCDCDCDCDCDCD)));
MOZ_ASSERT(!strcmp(output, "CDCDCDCDCDCD"));
}
static void
TestPrintUnsignedN()
{
TestPrintUnsigned8();
TestPrintUnsigned16();
TestPrintUnsigned32();
TestPrintUnsigned64();
}
static void
TestPrintUnsignedLeast8()
{
PoisonOutput();
sprintf(output, "%" PRIoLEAST8, uint_least8_t(042));
MOZ_ASSERT(!strcmp(output, "42"));
PoisonOutput();
sprintf(output, "%" PRIuLEAST8, uint_least8_t(17));
MOZ_ASSERT(!strcmp(output, "17"));
PoisonOutput();
sprintf(output, "%" PRIxLEAST8, uint_least8_t(0x2a));
MOZ_ASSERT(!strcmp(output, "2a"));
PoisonOutput();
sprintf(output, "%" PRIXLEAST8, uint_least8_t(0xCD));
MOZ_ASSERT(!strcmp(output, "CD"));
}
static void
TestPrintUnsignedLeast16()
{
PoisonOutput();
sprintf(output, "%" PRIoLEAST16, uint_least16_t(04242));
MOZ_ASSERT(!strcmp(output, "4242"));
PoisonOutput();
sprintf(output, "%" PRIuLEAST16, uint_least16_t(1717));
MOZ_ASSERT(!strcmp(output, "1717"));
PoisonOutput();
sprintf(output, "%" PRIxLEAST16, uint_least16_t(0x2a2a));
MOZ_ASSERT(!strcmp(output, "2a2a"));
PoisonOutput();
sprintf(output, "%" PRIXLEAST16, uint_least16_t(0xCDCD));
MOZ_ASSERT(!strcmp(output, "CDCD"));
}
static void
TestPrintUnsignedLeast32()
{
PoisonOutput();
sprintf(output, "%" PRIoLEAST32, uint_least32_t(0424242));
MOZ_ASSERT(!strcmp(output, "424242"));
PoisonOutput();
sprintf(output, "%" PRIuLEAST32, uint_least32_t(171717));
MOZ_ASSERT(!strcmp(output, "171717"));
PoisonOutput();
sprintf(output, "%" PRIxLEAST32, uint_least32_t(0x2a2a2a));
MOZ_ASSERT(!strcmp(output, "2a2a2a"));
PoisonOutput();
sprintf(output, "%" PRIXLEAST32, uint_least32_t(0xCDCDCD));
MOZ_ASSERT(!strcmp(output, "CDCDCD"));
}
static void
TestPrintUnsignedLeast64()
{
PoisonOutput();
sprintf(output, "%" PRIoLEAST64, uint_least64_t(UINT64_C(0424242424242)));
MOZ_ASSERT(!strcmp(output, "424242424242"));
PoisonOutput();
sprintf(output, "%" PRIuLEAST64, uint_least64_t(UINT64_C(17171717171717171717)));
MOZ_ASSERT(!strcmp(output, "17171717171717171717"));
PoisonOutput();
sprintf(output, "%" PRIxLEAST64, uint_least64_t(UINT64_C(0x2a2a2a2a2a2a2a)));
MOZ_ASSERT(!strcmp(output, "2a2a2a2a2a2a2a"));
PoisonOutput();
sprintf(output, "%" PRIXLEAST64, uint_least64_t(UINT64_C(0xCDCDCDCDCDCD)));
MOZ_ASSERT(!strcmp(output, "CDCDCDCDCDCD"));
}
static void
TestPrintUnsignedLeastN()
{
TestPrintUnsignedLeast8();
TestPrintUnsignedLeast16();
TestPrintUnsignedLeast32();
TestPrintUnsignedLeast64();
}
static void
TestPrintUnsignedFast8()
{
PoisonOutput();
sprintf(output, "%" PRIoFAST8, uint_fast8_t(042));
MOZ_ASSERT(!strcmp(output, "42"));
PoisonOutput();
sprintf(output, "%" PRIuFAST8, uint_fast8_t(17));
MOZ_ASSERT(!strcmp(output, "17"));
PoisonOutput();
sprintf(output, "%" PRIxFAST8, uint_fast8_t(0x2a));
MOZ_ASSERT(!strcmp(output, "2a"));
PoisonOutput();
sprintf(output, "%" PRIXFAST8, uint_fast8_t(0xCD));
MOZ_ASSERT(!strcmp(output, "CD"));
}
static void
TestPrintUnsignedFast16()
{
PoisonOutput();
sprintf(output, "%" PRIoFAST16, uint_fast16_t(04242));
MOZ_ASSERT(!strcmp(output, "4242"));
PoisonOutput();
sprintf(output, "%" PRIuFAST16, uint_fast16_t(1717));
MOZ_ASSERT(!strcmp(output, "1717"));
PoisonOutput();
sprintf(output, "%" PRIxFAST16, uint_fast16_t(0x2a2a));
MOZ_ASSERT(!strcmp(output, "2a2a"));
PoisonOutput();
sprintf(output, "%" PRIXFAST16, uint_fast16_t(0xCDCD));
MOZ_ASSERT(!strcmp(output, "CDCD"));
}
static void
TestPrintUnsignedFast32()
{
PoisonOutput();
sprintf(output, "%" PRIoFAST32, uint_fast32_t(0424242));
MOZ_ASSERT(!strcmp(output, "424242"));
PoisonOutput();
sprintf(output, "%" PRIuFAST32, uint_fast32_t(171717));
MOZ_ASSERT(!strcmp(output, "171717"));
PoisonOutput();
sprintf(output, "%" PRIxFAST32, uint_fast32_t(0x2a2a2a));
MOZ_ASSERT(!strcmp(output, "2a2a2a"));
PoisonOutput();
sprintf(output, "%" PRIXFAST32, uint_fast32_t(0xCDCDCD));
MOZ_ASSERT(!strcmp(output, "CDCDCD"));
}
static void
TestPrintUnsignedFast64()
{
PoisonOutput();
sprintf(output, "%" PRIoFAST64, uint_fast64_t(UINT64_C(0424242424242)));
MOZ_ASSERT(!strcmp(output, "424242424242"));
PoisonOutput();
sprintf(output, "%" PRIuFAST64, uint_fast64_t(UINT64_C(17171717171717171717)));
MOZ_ASSERT(!strcmp(output, "17171717171717171717"));
PoisonOutput();
sprintf(output, "%" PRIxFAST64, uint_fast64_t(UINT64_C(0x2a2a2a2a2a2a2a)));
MOZ_ASSERT(!strcmp(output, "2a2a2a2a2a2a2a"));
PoisonOutput();
sprintf(output, "%" PRIXFAST64, uint_fast64_t(UINT64_C(0xCDCDCDCDCDCD)));
MOZ_ASSERT(!strcmp(output, "CDCDCDCDCDCD"));
}
static void
TestPrintUnsignedFastN()
{
TestPrintUnsignedFast8();
TestPrintUnsignedFast16();
TestPrintUnsignedFast32();
TestPrintUnsignedFast64();
}
static void
TestPrintUnsignedMax()
{
PoisonOutput();
sprintf(output, "%" PRIoMAX, uintmax_t(UINTMAX_C(432157943248732)));
MOZ_ASSERT(!strcmp(output, "14220563454333534"));
PoisonOutput();
sprintf(output, "%" PRIuMAX, uintmax_t(UINTMAX_C(325719232983)));
MOZ_ASSERT(!strcmp(output, "325719232983"));
PoisonOutput();
sprintf(output, "%" PRIxMAX, uintmax_t(UINTMAX_C(327281321873)));
MOZ_ASSERT(!strcmp(output, "4c337ca791"));
PoisonOutput();
sprintf(output, "%" PRIXMAX, uintmax_t(UINTMAX_C(912389523743523)));
MOZ_ASSERT(!strcmp(output, "33DD03D75A323"));
}
static void
TestPrintUnsignedPtr()
{
PoisonOutput();
sprintf(output, "%" PRIoPTR, uintptr_t(reinterpret_cast<void*>(12345678)));
MOZ_ASSERT(!strcmp(output, "57060516"));
PoisonOutput();
sprintf(output, "%" PRIuPTR, uintptr_t(reinterpret_cast<void*>(87654321)));
MOZ_ASSERT(!strcmp(output, "87654321"));
PoisonOutput();
sprintf(output, "%" PRIxPTR, uintptr_t(reinterpret_cast<void*>(0x4c3a791)));
MOZ_ASSERT(!strcmp(output, "4c3a791"));
PoisonOutput();
sprintf(output, "%" PRIXPTR, uintptr_t(reinterpret_cast<void*>(0xF328DB)));
MOZ_ASSERT(!strcmp(output, "F328DB"));
}
static void
TestPrintUnsigned()
{
TestPrintUnsignedN();
TestPrintUnsignedLeastN();
TestPrintUnsignedFastN();
TestPrintUnsignedMax();
TestPrintUnsignedPtr();
}
static void
TestPrint()
{
TestPrintSigned();
TestPrintUnsigned();
}
/*
* The fscanf macros for signed integers are:
*
* SCNdN SCNdLEASTN SCNdFASTN SCNdMAX SCNdPTR
* SCNiN SCNiLEASTN SCNiFASTN SCNiMAX SCNiPTR
*
* In these names N is the width of the type as described in C99 7.18.1.
*/
/*
* MSVC's scanf is insufficiently powerful to implement all the SCN* macros.
* Rather than support some subset of them, we instead support none of them.
* See the comment at the top of IntegerPrintfMacros.h. But in case we ever do
* support them, the following tests should adequately test implementation
* correctness. (Indeed, these tests *revealed* MSVC's limitations.)
*
* That said, even if MSVC ever picks up complete support, we still probably
* don't want to support these, because of the undefined-behavior issue noted
* further down in the comment atop IntegerPrintfMacros.h.
*/
#define SHOULD_TEST_SCANF_MACROS 0
#if SHOULD_TEST_SCANF_MACROS
/*
* glibc header definitions for SCN{d,i,o,u,x}{,LEAST,FAST}8 use the "hh" length
* modifier, which is new in C99 (and C++11, by reference). We compile this
* file as C++11, so if "hh" is used in these macros, it's standard. But some
* versions of gcc wrongly think it isn't and warn about a "non-standard"
* modifier. And since these tests mostly exist to verify format-macro/type
* consistency (particularly through compiler warnings about incorrect formats),
* these warnings are unacceptable. So for now, compile tests for those macros
* only if we aren't compiling with gcc.
*/
#define SHOULD_TEST_8BIT_FORMAT_MACROS (!(MOZ_IS_GCC))
template<typename T>
union Input
{
T i;
unsigned char pun[16];
};
template<typename T>
static void
PoisonInput(Input<T>& input)
{
memset(input.pun, 0xDA, sizeof(input.pun));
}
template<typename T>
static bool
ExtraBitsUntouched(const Input<T>& input)
{
for (size_t i = sizeof(input.i); i < sizeof(input); i++) {
if (input.pun[i] != 0xDA)
return false;
}
return true;
}
static void
TestScanSigned8()
{
#if SHOULD_TEST_8BIT_FORMAT_MACROS
Input<int8_t> u;
PoisonInput(u);
sscanf("-17", "%" SCNd8, &u.i);
MOZ_ASSERT(u.i == -17);
MOZ_ASSERT(ExtraBitsUntouched(u));
PoisonInput(u);
sscanf("042", "%" SCNi8, &u.i);
MOZ_ASSERT(u.i == 042);
MOZ_ASSERT(ExtraBitsUntouched(u));
#endif
}
static void
TestScanSigned16()
{
Input<int16_t> u;
PoisonInput(u);
sscanf("-1742", "%" SCNd16, &u.i);
MOZ_ASSERT(u.i == -1742);
MOZ_ASSERT(ExtraBitsUntouched(u));
PoisonInput(u);
sscanf("04217", "%" SCNi16, &u.i);
MOZ_ASSERT(u.i == 04217);
MOZ_ASSERT(ExtraBitsUntouched(u));
}
static void
TestScanSigned32()
{
Input<int32_t> u;
PoisonInput(u);
sscanf("-174257", "%" SCNd32, &u.i);
MOZ_ASSERT(u.i == -174257);
MOZ_ASSERT(ExtraBitsUntouched(u));
PoisonInput(u);
sscanf("0423571", "%" SCNi32, &u.i);
MOZ_ASSERT(u.i == 0423571);
MOZ_ASSERT(ExtraBitsUntouched(u));
}
static void
TestScanSigned64()
{
Input<int64_t> u;
PoisonInput(u);
sscanf("-17425238927232", "%" SCNd64, &u.i);
MOZ_ASSERT(u.i == -INT64_C(17425238927232));
MOZ_ASSERT(ExtraBitsUntouched(u));
PoisonInput(u);
sscanf("042333576571", "%" SCNi64, &u.i);
MOZ_ASSERT(u.i == INT64_C(042333576571));
MOZ_ASSERT(ExtraBitsUntouched(u));
}
static void
TestScanSignedN()
{
TestScanSigned8();
TestScanSigned16();
TestScanSigned32();
TestScanSigned64();
}
static void
TestScanSignedLeast8()
{
#if SHOULD_TEST_8BIT_FORMAT_MACROS
Input<int_least8_t> u;
PoisonInput(u);
sscanf("-17", "%" SCNdLEAST8, &u.i);
MOZ_ASSERT(u.i == -17);
MOZ_ASSERT(ExtraBitsUntouched(u));
PoisonInput(u);
sscanf("042", "%" SCNiLEAST8, &u.i);
MOZ_ASSERT(u.i == 042);
MOZ_ASSERT(ExtraBitsUntouched(u));
#endif
}
static void
TestScanSignedLeast16()
{
Input<int_least16_t> u;
PoisonInput(u);
sscanf("-1742", "%" SCNdLEAST16, &u.i);
MOZ_ASSERT(u.i == -1742);
MOZ_ASSERT(ExtraBitsUntouched(u));
PoisonInput(u);
sscanf("04217", "%" SCNiLEAST16, &u.i);
MOZ_ASSERT(u.i == 04217);
MOZ_ASSERT(ExtraBitsUntouched(u));
}
static void
TestScanSignedLeast32()
{
Input<int_least32_t> u;
PoisonInput(u);
sscanf("-174257", "%" SCNdLEAST32, &u.i);
MOZ_ASSERT(u.i == -174257);
MOZ_ASSERT(ExtraBitsUntouched(u));
PoisonInput(u);
sscanf("0423571", "%" SCNiLEAST32, &u.i);
MOZ_ASSERT(u.i == 0423571);
MOZ_ASSERT(ExtraBitsUntouched(u));
}
static void
TestScanSignedLeast64()
{
Input<int_least64_t> u;
PoisonInput(u);
sscanf("-17425238927232", "%" SCNdLEAST64, &u.i);
MOZ_ASSERT(u.i == -INT64_C(17425238927232));
MOZ_ASSERT(ExtraBitsUntouched(u));
PoisonInput(u);
sscanf("042333576571", "%" SCNiLEAST64, &u.i);
MOZ_ASSERT(u.i == INT64_C(042333576571));
MOZ_ASSERT(ExtraBitsUntouched(u));
}
static void
TestScanSignedLeastN()
{
TestScanSignedLeast8();
TestScanSignedLeast16();
TestScanSignedLeast32();
TestScanSignedLeast64();
}
static void
TestScanSignedFast8()
{
#if SHOULD_TEST_8BIT_FORMAT_MACROS
Input<int_fast8_t> u;
PoisonInput(u);
sscanf("-17", "%" SCNdFAST8, &u.i);
MOZ_ASSERT(u.i == -17);
MOZ_ASSERT(ExtraBitsUntouched(u));
PoisonInput(u);
sscanf("042", "%" SCNiFAST8, &u.i);
MOZ_ASSERT(u.i == 042);
MOZ_ASSERT(ExtraBitsUntouched(u));
#endif
}
static void
TestScanSignedFast16()
{
Input<int_fast16_t> u;
PoisonInput(u);
sscanf("-1742", "%" SCNdFAST16, &u.i);
MOZ_ASSERT(u.i == -1742);
MOZ_ASSERT(ExtraBitsUntouched(u));
PoisonInput(u);
sscanf("04217", "%" SCNiFAST16, &u.i);
MOZ_ASSERT(u.i == 04217);
MOZ_ASSERT(ExtraBitsUntouched(u));
}
static void
TestScanSignedFast32()
{
Input<int_fast32_t> u;
PoisonInput(u);
sscanf("-174257", "%" SCNdFAST32, &u.i);
MOZ_ASSERT(u.i == -174257);
MOZ_ASSERT(ExtraBitsUntouched(u));
PoisonInput(u);
sscanf("0423571", "%" SCNiFAST32, &u.i);
MOZ_ASSERT(u.i == 0423571);
MOZ_ASSERT(ExtraBitsUntouched(u));
}
static void
TestScanSignedFast64()
{
Input<int_fast64_t> u;
PoisonInput(u);
sscanf("-17425238927232", "%" SCNdFAST64, &u.i);
MOZ_ASSERT(u.i == -INT64_C(17425238927232));
MOZ_ASSERT(ExtraBitsUntouched(u));
PoisonInput(u);
sscanf("042333576571", "%" SCNiFAST64, &u.i);
MOZ_ASSERT(u.i == INT64_C(042333576571));
MOZ_ASSERT(ExtraBitsUntouched(u));
}
static void
TestScanSignedFastN()
{
TestScanSignedFast8();
TestScanSignedFast16();
TestScanSignedFast32();
TestScanSignedFast64();
}
static void
TestScanSignedMax()
{
Input<intmax_t> u;
PoisonInput(u);
sscanf("-432157943248732", "%" SCNdMAX, &u.i);
MOZ_ASSERT(u.i == -INTMAX_C(432157943248732));
MOZ_ASSERT(ExtraBitsUntouched(u));
PoisonInput(u);
sscanf("04233357236571", "%" SCNiMAX, &u.i);
MOZ_ASSERT(u.i == INTMAX_C(04233357236571));
MOZ_ASSERT(ExtraBitsUntouched(u));
}
static void
TestScanSignedPtr()
{
Input<intptr_t> u;
PoisonInput(u);
sscanf("12345678", "%" SCNdPTR, &u.i);
MOZ_ASSERT(u.i == intptr_t(reinterpret_cast<void*>(12345678)));
MOZ_ASSERT(ExtraBitsUntouched(u));
PoisonInput(u);
sscanf("04233357236", "%" SCNiPTR, &u.i);
MOZ_ASSERT(u.i == intptr_t(reinterpret_cast<void*>(04233357236)));
MOZ_ASSERT(ExtraBitsUntouched(u));
}
static void
TestScanSigned()
{
TestScanSignedN();
TestScanSignedLeastN();
TestScanSignedFastN();
TestScanSignedMax();
TestScanSignedPtr();
}
/*
* The fscanf macros for unsigned integers are:
*
* SCNoN SCNoLEASTN SCNoFASTN SCNoMAX SCNoPTR
* SCNuN SCNuLEASTN SCNuFASTN SCNuMAX SCNuPTR
* SCNxN SCNxLEASTN SCNxFASTN SCNxMAX SCNxPTR
*
* In these names N is the width of the type as described in C99 7.18.1.
*/
static void
TestScanUnsigned8()
{
#if SHOULD_TEST_8BIT_FORMAT_MACROS
Input<uint8_t> u;
PoisonInput(u);
sscanf("17", "%" SCNo8, &u.i);
MOZ_ASSERT(u.i == 017);
MOZ_ASSERT(ExtraBitsUntouched(u));
PoisonInput(u);
sscanf("42", "%" SCNu8, &u.i);
MOZ_ASSERT(u.i == 42);
MOZ_ASSERT(ExtraBitsUntouched(u));
PoisonInput(u);
sscanf("2A", "%" SCNx8, &u.i);
MOZ_ASSERT(u.i == 0x2A);
MOZ_ASSERT(ExtraBitsUntouched(u));
#endif
}
static void
TestScanUnsigned16()
{
Input<uint16_t> u;
PoisonInput(u);
sscanf("1742", "%" SCNo16, &u.i);
MOZ_ASSERT(u.i == 01742);
MOZ_ASSERT(ExtraBitsUntouched(u));
PoisonInput(u);
sscanf("4217", "%" SCNu16, &u.i);
MOZ_ASSERT(u.i == 4217);
MOZ_ASSERT(ExtraBitsUntouched(u));
PoisonInput(u);
sscanf("2ABC", "%" SCNx16, &u.i);
MOZ_ASSERT(u.i == 0x2ABC);
MOZ_ASSERT(ExtraBitsUntouched(u));
}
static void
TestScanUnsigned32()
{
Input<uint32_t> u;
PoisonInput(u);
sscanf("17421742", "%" SCNo32, &u.i);
MOZ_ASSERT(u.i == 017421742);
MOZ_ASSERT(ExtraBitsUntouched(u));
PoisonInput(u);
sscanf("4217867", "%" SCNu32, &u.i);
MOZ_ASSERT(u.i == 4217867);
MOZ_ASSERT(ExtraBitsUntouched(u));
PoisonInput(u);
sscanf("2ABCBEEF", "%" SCNx32, &u.i);
MOZ_ASSERT(u.i == 0x2ABCBEEF);
MOZ_ASSERT(ExtraBitsUntouched(u));
}
static void
TestScanUnsigned64()
{
Input<uint64_t> u;
PoisonInput(u);
sscanf("17421742173", "%" SCNo64, &u.i);
MOZ_ASSERT(u.i == UINT64_C(017421742173));
MOZ_ASSERT(ExtraBitsUntouched(u));
PoisonInput(u);
sscanf("421786713579", "%" SCNu64, &u.i);
MOZ_ASSERT(u.i == UINT64_C(421786713579));
MOZ_ASSERT(ExtraBitsUntouched(u));
PoisonInput(u);
sscanf("DEADBEEF7457E", "%" SCNx64, &u.i);
MOZ_ASSERT(u.i == UINT64_C(0xDEADBEEF7457E));
MOZ_ASSERT(ExtraBitsUntouched(u));
}
static void
TestScanUnsignedN()
{
TestScanUnsigned8();
TestScanUnsigned16();