Reading a line over 128mb with QTextReader from a file crashes with bad alloc with 32bit application

When reading a long line (128mb+) from a file with QTextReader, the 32bit application crashes with bad alloc. 64bit application does not crash in this situation.

The stacktrace of crash is:
1 RaiseException KERNELBASE 0x7576c54f
2 CxxThrowException VCRUNTIME140D 0xf5990a2
> 3 qBadAlloc qglobal.cpp 3044 0x66ada83c
4 QString::reallocData qstring.cpp 1772 0x66ba5026
5 QString::resize qstring.cpp 1686 0x66b9df04
6 QString::setUnicode qstring.cpp 4853 0x66ba4403
7 QTextStream::readLineInto qtextstream.cpp 1729 0x66c76283
8 QTextStream::readLine qtextstream.cpp 1680 0x66c76182
9 main main.cpp 12 0x11e1540

Steps to reproduce:

• Run attached sample
• EXPECTED: Line is properly read from the file
• ACTUAL: Application crashes