07.01.2015 20:09, Oliver Eichler пишет:
>
> >
>
> > The second patch fixes numerous warnings "Warning: QImage::setColor:
>
> > Index out of bound" and crash in displaying Garmin maps from
>
> > http://velo100.ru/gps/download (site in Russian) with stranger.typ.
>
>
>
> I am not sure if that fix is so good. If the value is above 256 it's
> probably because some flags are stored with the value. In that case it
> would be interesting to know their function. Any chance to find that out?
>
>
>
> Oliver
>
Hi Oliver,
warnings and crash are not related.
As I remember my debugging, decodeColorTable is sometimes called with
maxcolor=1<<16. This results in a series of warnings.
I reproduced the crash and include the output of gdb. Full output is in
attachment.
> #9 0x0000000000746b3d in CMapTDB::drawLabels
> (this=this@entry=0x1065d790,
> p=..., lbls=...) at
> /usr/src/debug/qlandkartegt-1.7.7/src/CMapTDB.cpp:3010
> 3010 CCanvas::drawText(lbl->str, p, lbl->pt, Qt::black,
> fonts[lbl->type]);
> (gdb) print lbl->type
> $1 = 7
> (gdb)
Vector fonts has size 5 but index lbl->type=7. I don't know why, so I
simply increased the size of vector to maximum possible value of
lbl->type. It is always masked with 7, when assigned.
Warning: QImage::setColor: Index out of bound 65532
Warning: QImage::setColor: Index out of bound 65533
Warning: QImage::setColor: Index out of bound 65534
Warning: QImage::setColor: Index out of bound 65535
Warning: libpng warning: iCCP: known incorrect sRGB profile
Program received signal SIGSEGV, Segmentation fault.
0x00000033bd1fa9a3 in QFontDatabase::load(QFontPrivate const*, int) ()
from /lib64/libQtGui.so.4
Missing separate debuginfos, use: debuginfo-install
lib64GConf2_4-3.2.6-4.mga4.x86_64 lib64ORBit2_0-2.14.19-10.mga4.x86_64
lib64art_lgpl2-2.3.21-6.mga4.x86_64 lib64atk1.0_0-2.10.0-2.mga4.x86_64
lib64avahi-client3-0.6.31-8.mga4.x86_64 lib64avahi-common3-0.6.31-8.mga4.x86_64
lib64avahi-glib1-0.6.31-8.mga4.x86_64 lib64bonobo2_0-2.32.1-7.mga4.x86_64
lib64bonoboui2_0-2.24.5-6.mga4.x86_64 lib64cairo2-1.12.16-2.mga4.x86_64
lib64canberra-gtk0-0.30-4.mga4.x86_64 lib64canberra0-0.30-4.mga4.x86_64
lib64dbus-glib1_2-0.100.2-2.mga4.x86_64 lib64drm2-2.4.51-1.mga4.x86_64
lib64gail18-2.24.22-3.mga4.x86_64 lib64gbm1-10.0.5-1.1.mga4.tainted.x86_64
lib64gcrypt11-1.5.4-1.mga4.x86_64 lib64gdk_pixbuf2.0_0-2.30.1-1.mga4.x86_64
lib64gnome-keyring0-3.10.1-2.mga4.x86_64 lib64gnome-vfs2_0-2.24.4-5.mga4.x86_64
lib64gnome2_0-2.32.1-11.mga4.x86_64 lib64gnomecanvas2_0-2.30.3-6.mga4.x86_64
lib64gnomeui2_0-2.24.5-6.mga4.x86_64 lib64gpg-error0-1.12-2.mga4.x86_64
lib64graphite2_3-1.2.4-1.mga4.x86_64 lib64gtk+-x11-2.0_0-2.24.22-3.mga4.x86_64
lib64harfbuzz0-0.9.22-2.mga4.x86_64 lib64lcms2_2-2.5-2.1.mga4.x86_64
lib64mesaegl1-10.0.5-1.1.mga4.tainted.x86_64 lib64mng2-2.0.2-3.mga4.x86_64
lib64ogg0-1.3.1-2.mga4.x86_64 lib64pango1.0_0-1.36.1-1.mga4.x86_64
lib64pango1.0_0-modules-1.36.1-1.mga4.x86_64
lib64pixman1_0-0.32.4-1.mga4.x86_64 lib64popt0-1.16-5.mga4.x86_64
lib64qtsvg4-4.8.6-1.mga4.x86_64 lib64tdb1-1.2.12-2.mga4.x86_64
lib64vorbis0-1.3.3-4.mga4.x86_64 lib64vorbisfile3-1.3.3-4.mga4.x86_64
lib64wayland-client0-1.3.0-2.mga4.x86_64
lib64wayland-server0-1.3.0-2.mga4.x86_64 lib64x11-xcb1-1.6.2-2.mga4.x86_64
lib64xcb-dri2_0-1.9.1-2.1.mga4.x86_64 lib64xcb-render0-1.9.1-2.1.mga4.x86_64
lib64xcb-shm0-1.9.1-2.1.mga4.x86_64 lib64xcb-xfixes0-1.9.1-2.1.mga4.x86_64
lib64xcomposite1-0.4.4-5.mga4.x86_64 lib64xdamage1-1.1.4-5.mga4.x86_64
qt4-database-plugin-sqlite-4.8.6-1.mga4.x86_64
(gdb) where
#0 0x00000033bd1fa9a3 in QFontDatabase::load(QFontPrivate const*, int) ()
from /lib64/libQtGui.so.4
#1 0x00000033bd1d8e19 in QFontPrivate::engineForScript(int) const ()
from /lib64/libQtGui.so.4
#2 0x00000033bd20e962 in QTextEngine::fontEngine(QScriptItem const&, QFixed*,
QFixed*, QFixed*) const () from /lib64/libQtGui.so.4
#3 0x00000033bd20f113 in QTextEngine::shapeTextWithHarfbuzz(int) const ()
from /lib64/libQtGui.so.4
#4 0x00000033bd210212 in QTextEngine::shapeText(int) const ()
from /lib64/libQtGui.so.4
#5 0x00000033bd210535 in QTextEngine::shape(int) const ()
from /lib64/libQtGui.so.4
#6 0x00000033bd216140 in QTextEngine::boundingBox(int, int) const ()
from /lib64/libQtGui.so.4
#7 0x00000033bd1ed224 in QFontMetrics::boundingRect(QString const&) const ()
from /lib64/libQtGui.so.4
#8 0x00000000004e0f29 in CCanvas::drawText (str=..., p=..., center=...,
color=..., font=...)
at /usr/src/debug/qlandkartegt-1.7.7/src/CCanvas.cpp:721
#9 0x0000000000746b3d in CMapTDB::drawLabels (this=this@entry=0x1065d790,
p=..., lbls=...) at /usr/src/debug/qlandkartegt-1.7.7/src/CMapTDB.cpp:3010
#10 0x0000000000754c66 in CMapTDB::draw (this=0x1065d790)
at /usr/src/debug/qlandkartegt-1.7.7/src/CMapTDB.cpp:2151
#11 0x0000000000752b76 in CMapTDB::draw (this=0x1065d790, p=...)
---Type <return> to continue, or q <return> to quit---q
at /usr/src/debQuit
(gdb) frame 9
#9 0x0000000000746b3d in CMapTDB::drawLabels (this=this@entry=0x1065d790,
p=..., lbls=...) at /usr/src/debug/qlandkartegt-1.7.7/src/CMapTDB.cpp:3010
3010 CCanvas::drawText(lbl->str, p, lbl->pt, Qt::black,
fonts[lbl->type]);
(gdb) print lbl->type
$1 = 7
(gdb)
------------------------------------------------------------------------------
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