[Bug 1263778] [NEW] False positives with g_utf8_collate

[Alex Valavanis]

Public bug reported:

Valgrind reports false positives ussing the glib utf8-handling
functions.  According to the glib developers, these should be added to
the valgrind suppression files for Ubuntu.

See https://bugzilla.gnome.org/show_bug.cgi?id=720984

==22436== Invalid read of size 8
==22436==    at 0x51D8828: wcscmp (wcscmp.S:426)
==22436==    by 0x51E44AE: wcscoll_l (strcoll_l.c:489)
==22436==    by 0x4EAA506: g_utf8_collate (gunicollate.c:117)
==22436==    by 0x40071B: main (in /home/eenava/devel/qclsim/build/glib-test)
==22436==  Address 0x59590a8 is 8 bytes inside a block of size 12 alloc'd
==22436==    at 0x4C2A2DB: malloc (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==22436==    by 0x4E81DD0: g_malloc (gmem.c:104)
==22436==    by 0x4EAB1F3: _g_utf8_normalize_wc (gunidecomp.c:398)
==22436==    by 0x4EAA4F8: g_utf8_collate (gunicollate.c:115)

** Affects: valgrind (Ubuntu)
     Importance: Undecided
         Status: New

** Attachment added: "Test program for reproducing bug"
   https://bugs.launchpad.net/bugs/1263778/+attachment/3934804/+files/glib-test.c

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https://bugs.launchpad.net/bugs/1263778

Title:
  False positives with g_utf8_collate

Status in “valgrind” package in Ubuntu:
  New

Bug description:
  Valgrind reports false positives ussing the glib utf8-handling
  functions.  According to the glib developers, these should be added to
  the valgrind suppression files for Ubuntu.

  See https://bugzilla.gnome.org/show_bug.cgi?id=720984

  ==22436== Invalid read of size 8
  ==22436==    at 0x51D8828: wcscmp (wcscmp.S:426)
  ==22436==    by 0x51E44AE: wcscoll_l (strcoll_l.c:489)
  ==22436==    by 0x4EAA506: g_utf8_collate (gunicollate.c:117)
  ==22436==    by 0x40071B: main (in /home/eenava/devel/qclsim/build/glib-test)
  ==22436==  Address 0x59590a8 is 8 bytes inside a block of size 12 alloc'd
  ==22436==    at 0x4C2A2DB: malloc (in
  /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
  ==22436==    by 0x4E81DD0: g_malloc (gmem.c:104)
  ==22436==    by 0x4EAB1F3: _g_utf8_normalize_wc (gunidecomp.c:398)
  ==22436==    by 0x4EAA4F8: g_utf8_collate (gunicollate.c:115)

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