diff options
Diffstat (limited to 'src/corelib')
| -rw-r--r-- | src/corelib/io/qdatastream.cpp | 92 |
1 files changed, 77 insertions, 15 deletions
diff --git a/src/corelib/io/qdatastream.cpp b/src/corelib/io/qdatastream.cpp index b203899..e324ffe 100644 --- a/src/corelib/io/qdatastream.cpp +++ b/src/corelib/io/qdatastream.cpp @@ -622,11 +622,16 @@ QDataStream &QDataStream::operator>>(qint16 &i) setStatus(ReadPastEnd); } } else { - register uchar *p = (uchar *)(&i); + union { + qint16 val1; + char val2[2]; + } x; + char *p = x.val2; char b[2]; if (dev->read(b, 2) == 2) { *p++ = b[1]; *p = b[0]; + i = x.val1; } else { setStatus(ReadPastEnd); } @@ -660,13 +665,18 @@ QDataStream &QDataStream::operator>>(qint32 &i) setStatus(ReadPastEnd); } } else { // swap bytes - uchar *p = (uchar *)(&i); + union { + qint32 val1; + char val2[4]; + } x; + char *p = x.val2; char b[4]; if (dev->read(b, 4) == 4) { *p++ = b[3]; *p++ = b[2]; *p++ = b[1]; *p = b[0]; + i = x.val1; } else { setStatus(ReadPastEnd); } @@ -703,7 +713,12 @@ QDataStream &QDataStream::operator>>(qint64 &i) setStatus(ReadPastEnd); } } else { // swap bytes - uchar *p = (uchar *)(&i); + union { + qint64 val1; + char val2[8]; + } x; + + char *p = x.val2; char b[8]; if (dev->read(b, 8) == 8) { *p++ = b[7]; @@ -714,6 +729,7 @@ QDataStream &QDataStream::operator>>(qint64 &i) *p++ = b[2]; *p++ = b[1]; *p = b[0]; + i = x.val1; } else { setStatus(ReadPastEnd); } @@ -751,13 +767,19 @@ QDataStream &QDataStream::operator>>(float &f) setStatus(ReadPastEnd); } } else { // swap bytes - uchar *p = (uchar *)(&f); + union { + float val1; + char val2[4]; + } x; + + char *p = x.val2; char b[4]; if (dev->read(b, 4) == 4) { *p++ = b[3]; *p++ = b[2]; *p++ = b[1]; *p = b[0]; + f = x.val1; } else { setStatus(ReadPastEnd); } @@ -788,7 +810,11 @@ QDataStream &QDataStream::operator>>(double &f) setStatus(ReadPastEnd); } } else { // swap bytes - register uchar *p = (uchar *)(&f); + union { + double val1; + char val2[8]; + } x; + char *p = x.val2; char b[8]; if (dev->read(b, 8) == 8) { *p++ = b[7]; @@ -799,13 +825,18 @@ QDataStream &QDataStream::operator>>(double &f) *p++ = b[2]; *p++ = b[1]; *p = b[0]; + f = x.val1; } else { setStatus(ReadPastEnd); } } #else //non-standard floating point format - register uchar *p = (uchar *)(&f); + union { + double val1; + char val2[8]; + } x; + char *p = x.val2; char b[8]; if (dev->read(b, 8) == 8) { if (noswap) { @@ -827,6 +858,7 @@ QDataStream &QDataStream::operator>>(double &f) *p++ = b[Q_DF(1)]; *p = b[Q_DF(0)]; } + f = x.val1; } else { setStatus(ReadPastEnd); } @@ -970,7 +1002,12 @@ QDataStream &QDataStream::operator<<(qint16 i) if (noswap) { dev->write((char *)&i, sizeof(qint16)); } else { // swap bytes - register uchar *p = (uchar *)(&i); + union { + qint16 val1; + char val2[2]; + } x; + x.val1 = i; + char *p = x.val2; char b[2]; b[1] = *p++; b[0] = *p; @@ -992,7 +1029,12 @@ QDataStream &QDataStream::operator<<(qint32 i) if (noswap) { dev->write((char *)&i, sizeof(qint32)); } else { // swap bytes - register uchar *p = (uchar *)(&i); + union { + qint32 val1; + char val2[4]; + } x; + x.val1 = i; + char *p = x.val2; char b[4]; b[3] = *p++; b[2] = *p++; @@ -1022,13 +1064,18 @@ QDataStream &QDataStream::operator<<(qint64 i) { CHECK_STREAM_PRECOND(*this) if (version() < 6) { - quint32 i1 = i & 0xffffffff; - quint32 i2 = i >> 32; - *this << i2 << i1; + quint32 i1 = i & 0xffffffff; + quint32 i2 = i >> 32; + *this << i2 << i1; } else if (noswap) { // no conversion needed dev->write((char *)&i, sizeof(qint64)); } else { // swap bytes - register uchar *p = (uchar *)(&i); + union { + qint64 val1; + char val2[8]; + } x; + x.val1 = i; + char *p = x.val2; char b[8]; b[7] = *p++; b[6] = *p++; @@ -1077,7 +1124,12 @@ QDataStream &QDataStream::operator<<(float f) if (noswap) { // no conversion needed dev->write((char *)&g, sizeof(float)); } else { // swap bytes - register uchar *p = (uchar *)(&g); + union { + float val1; + char val2[4]; + } x; + x.val1 = f; + char *p = x.val2; char b[4]; b[3] = *p++; b[2] = *p++; @@ -1103,7 +1155,12 @@ QDataStream &QDataStream::operator<<(double f) if (noswap) { dev->write((char *)&f, sizeof(double)); } else { - register uchar *p = (uchar *)(&f); + union { + double val1; + char val2[8]; + } x; + x.val1 = f; + char *p = x.val2; char b[8]; b[7] = *p++; b[6] = *p++; @@ -1116,7 +1173,12 @@ QDataStream &QDataStream::operator<<(double f) dev->write(b, 8); } #else - register uchar *p = (uchar *)(&f); + union { + double val1; + char val2[8]; + } x; + x.val1 = f; + char *p = x.val2; char b[8]; if (noswap) { b[Q_DF(0)] = *p++; |