tst_LargeFile::mapOffsetOverflow started failing on 32-bit xenial

[Timo Jyrinki]

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
}

[Timo Jyrinki (timo-jyrinki)]

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.

[Launchpad Janitor (janitor)]

This bug was fixed in the package qtbase-opensource-src - 5.5.1+dfsg-16ubuntu6

---------------
qtbase-opensource-src (5.5.1+dfsg-16ubuntu6) xenial; urgency=medium

  [ Alberto Mardegan ]
  * debian/patches/xcb_fix_parent_screen_of_embedded_windows.patch:
    - Fix wrong size of embedded window. Fixed in upstream Qt 5.6.
      (LP: #1564767)

 -- Timo Jyrinki <email address hidden> Tue, 05 Apr 2016 13:59:17 +0000

[Timo Jyrinki (timo-jyrinki)]

qtbase-opensource-src (5.5.1+dfsg-16ubuntu4) xenial; urgency=medium

  * debian/patches/qdoc-Wrap-QML-read-only-and-default-qualifiers-in-br.patch:
    - Fix typos in property definitions. (LP: #1557259)
  * Temporarily disable a test broken by glibc upgrade (LP: #1560528).

 -- Timo Jyrinki <email address hidden> Tue, 29 Mar 2016 11:30:45 +0000