gecko-dev/tools/coverity/model.cpp

140 строки
3.1 KiB
C++

/*
Coverity model file in order to avoid false-positive
*/
#define NULL (void*)0
typedef unsigned char jsbytecode;
typedef unsigned short uint16_t;
typedef unsigned int uint32_t;
typedef unsigned int int32_t;
typedef unsigned char uint8_t;
static const uint16_t CHUNK_HEAD_SIZE = 8;
void
assert(bool expr)
{
if (!expr) {
__coverity_panic__();
}
}
#define ERREXIT(cinfo, err) __coverity_panic__();
void
MOZ_ASSUME_UNREACHABLE(char* str)
{
__coverity_panic__();
}
static void
MOZ_ReportAssertionFailure(const char* aStr, const char* aFilename, int aLine)
{
__coverity_panic__();
}
static void
MOZ_ReportCrash(const char* aStr, const char* aFilename, int aLine)
{
__coverity_panic__();
}
#define MOZ_ASSERT(expr, msg) assert(!!(expr))
#define MOZ_ASSERT(expr) assert(!!(expr))
#define NS_ASSERTION(expr, msg) assert(!!(expr))
#define PORT_Assert(expr) assert(!!(expr))
#define PR_ASSERT(expr) assert(!!(expr))
// Kills Structurally dead code (UNREACHABLE)
#define NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_THIS_BEGIN(_class) \
NS_IMETHODIMP_(bool) \
NS_CYCLE_COLLECTION_CLASSNAME(_class)::CanSkipThisReal(void* p) \
{ \
__coverity_panic__(); \
_class* tmp = DowncastCCParticipant<_class>(p);
int
GET_JUMP_OFFSET(jsbytecode* pc)
{
__coverity_tainted_data_sink__(static_cast<void*>(pc));
return 0;
}
// Data sanity checkers
#define XPT_SWAB16(data) __coverity_tainted_data_sanitize__(&data)
#define XPT_SWAB32(data) __coverity_tainted_data_sanitize__(&data)
static unsigned
GET_UINT24(const jsbytecode* pc)
{
__coverity_tainted_data_sink__(static_cast<void*>(pc));
return 0;
}
class HeaderParser
{
private:
class ChunkHeader
{
uint8_t mRaw[CHUNK_HEAD_SIZE];
HeaderParser::ChunkHeader::ChunkSize() const
{
__coverity_tainted_data_sink__(static_cast<void*>(mRaw));
return ((mRaw[7] << 24) | (mRaw[6] << 16) | (mRaw[5] << 8) | (mRaw[4]));
}
};
};
void
NS_DebugBreak(uint32_t aSeverity,
const char* aStr,
const char* aExpr,
const char* aFile,
int32_t aLine)
{
__coverity_panic__();
}
static inline void
Swap(uint32_t* value)
{
__coverity_tainted_data_sink__(value);
*value = (*value >> 24) | ((*value >> 8) & 0x0000ff00) |
((*value << 8) & 0x00ff0000) | (*value << 24);
}
static uint32_t
xtolong(const uint8_t* ll)
{
uint32_t value = 0;
__coverity_tainted_data_sink__(static_cast<void*>(ll));
return value;
}
class ByteReader
{
public:
const uint8_t* Read(size_t aCount);
uint32_t ReadU24()
{
const uint8_t* ptr = Read(3);
if (!ptr) {
MOZ_ASSERT(false);
return 0;
}
__coverity_tainted_data_sanitize__(static_cast<void*>(&ptr[0]));
__coverity_tainted_data_sanitize__(static_cast<void*>(&ptr[1]));
__coverity_tainted_data_sanitize__(static_cast<void*>(&ptr[2]));
return ptr[0] << 16 | ptr[1] << 8 | ptr[2];
}
};