Ubuntu
qt4-x11 package

  1. Bug #705689
  2. Comment #13

Comment 13 for bug 705689

Revision history for this message
Jani Monoses (jani) wrote : Re: unity-2d-launcher crashes with segfault error on armel (natty only)

An alternatve to rebuilding Qt with the patch applied is to binary patch the Qt libs and test:

I copied libQtCore.so and libQtGui.so (the two Qt deps of the simple Qt app which crashes) in the current dir
Then
sed -i 's/\x04\(\xbf.\xe8\x00.\)/\x02\1/' libQtCore.so.4
same on QtGui

export LD_LIBRARY_PATH=.
ldd ./crasherapp (just to confirm it ineed gets the libs from the current dir)

This sed invocation changes itt to ittt in the places where a strexeq follows

The app crashes in the same way so unlikely imho that the patch is the issue, or that indeed the patch is incorrect.

With ittt objdump -d annotates that disas line with
beq.n 1242c8 <_ZN12QApplication11qt_metacastEPKc+0x5c> ; unpredictable <IT:eq>

because it is unclear whether the ittt of the previous teq should affect the conditional bits in the beqeq instruction