Loading...

XML

Word

Printable

Type: Bug
Resolution: Done
Priority: P0: Blocker
Fix Version/s: 5.4.2
Affects Version/s: 5.4.2, 5.5.0 Alpha
Component/s: Core: Other
Labels:
None
Environment:
Debian SID + gcc 5 from eperimental

Commits:
36d6eb721e7d5997ade75e289d4088dc48678d0d (qtbase/5.4.2 8.5.2015, 5.4.2)

I've tried a few examples and some of them are crashing (e.g. examples/widgets/mainwindows/application).

From what I've seen it seems that (sometimes) gcc5 fails to static_cast QCoreAppication to QGuiApplication, qGuiApp macro (static_cast<QGuiApplication *>(QCoreApplication::instance())) is 0.

I realy have no idea why somethimes qGuiApp works and sometime doesn't, and I have no idea if its gcc's fault or Qt's.

I attached the full backtrace.

- - Sort By Name
  - Sort By Date
  - Ascending
  - Descending
  - Thumbnails
  - List

application.dump.txt
24 Apr '15 06:20
12 kB
BogDan Vatra
clang-lto-copy-relocs.txt
11 May '15 19:09
10 kB
Evangelos Foutras
gcc5_crash.txt
23 Apr '15 07:39
12 kB
BogDan Vatra
gdb_log.txt
23 Apr '15 17:04
14 kB
BogDan Vatra
libQt5Core.so.dump.txt.bz2
24 Apr '15 06:19
243 kB
BogDan Vatra
libQt5Core-gcc49-vs-gcc51-relocs.diff
11 May '15 14:54
31 kB
Evangelos Foutras
libQt5Gui.so.dump.txt
24 Apr '15 06:19
556 kB
BogDan Vatra
Makefile
24 Apr '15 08:09
93 kB
BogDan Vatra
trace_log.txt
24 Apr '15 06:19
8 kB
BogDan Vatra

is required for

QTBUG-44881 Issues to be fixed before 5.4.2

Closed

replaces

QTBUG-45836 Segmentation fault with sendEvent()

Closed

QTBUG-46647 QByteArray::isNull() doesn't work properly under CMake

Closed

QTBUG-45760 Some Qt apps crashs if they are compiled with gcc5

Closed

- Issue Only
- Show All Reviews
- Show Open Reviews
- Show All Issues
- Show Open Issues

For Gerrit Dashboard: QTBUG-45755
#	Subject	Branch	Project	Status	CR	V
111427,3	configure: Change default of CFG_REDUCE_RELOCATIONS to "no".	5.4.2	qt/qtbase	Status: MERGED	+2	0
111787,2	Require -fPIC instead of just -fPIE for -reduce-relocations	5.4.2	qt/qtbase	Status: MERGED	+2	0
111886,2	Revert "configure: Change default of CFG_REDUCE_RELOCATIONS to "no"."	5.4.2	qt/qtbase	Status: MERGED	+2	0
112053,4	Make qglobal.h complain if you use -fPIE	5.4.2	qt/qtbase	Status: MERGED	+2	0
112060,3	Try to ensure that -fPIC is used in CMake builds	5.4.2	qt/qtbase	Status: MERGED	+2	0
112224,3	tst_bic: Use -fPIC instead of -fPIE.	master	qt/qtqa	Status: MERGED	+2	0
112240,2	Make QCoreApplication abort execution if it detects copy relocations	5.5	qt/qtbase	Status: ABANDONED	-1	0