This seems to be a regression/change in glibc. I experimented at
https://launchpad.net/~timo-jyrinki/+archive/ubuntu/quantal-compiz-
unity-testing/+packages and only after forcing the glibc 2.21 into use,
I was able to get the unit test passing.
** Also affects: glibc (Ubuntu)
Importance: Undecided
Status: New
** Changed in: qtbase-opensource-src (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1560528
Title:
tst_LargeFile::mapOffsetOverflow started failing on 32-bit xenial
Status in glibc package in Ubuntu:
New
Status in qtbase-opensource-src package in Ubuntu:
Incomplete
Bug description:
Something has changed xenial, resulting in the following one unit test
failing on 32-bit (it's expected failure on 64-bit):
QWARN : tst_LargeFile::mapOffsetOverflow() QFSFileEngine::map: Mapping a
file beyond its size is not portable
FAIL! : tst_LargeFile::mapOffsetOverflow() '!address' returned FALSE. ()
Loc: [tst_largefile.cpp(517)]
--
blockSize(1 << 12)
...
void tst_LargeFile::mapOffsetOverflow()
{
// Out-of-range mappings should fail, and not silently clip the offset
for (int i = 50; i < 63; ++i) {
uchar *address = 0;
address = largeFile.map(((qint64)1 << i), blockSize);
#if defined(__x86_64__)
QEXPECT_FAIL("", "fails on 64-bit Linux (QTBUG-21175)", Abort);
#endif
QVERIFY( !address );
address = largeFile.map(((qint64)1 << i) + blockSize, blockSize);
QVERIFY( !address );
}
#endif
}
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