Public bug reported:
Our group develops an X application that uses the Motif Library (package libxm4
v2.3.4-5). It appears that in the latest version of libXm.4.0.4 on Trusty
(14.04), on certain types of X events, it causes a segfault. I've isolated this
to a particular version of the library and OS rev. Our application works fine
for OS older than 14.04, ie 12.04 etc. I also confirmed the version issue by
copying libXm.4.0.3 from a 12.04 machine onto a 14.04 machine and it allows the
program to work normally. I basically copied libXm.4.0.3 from a 12.04 machine
to the 14.04 machine and created a symlink to it:
ln -s /usr/lib/x86_64-linux-gnu/libXm.4.0.3
/usr/lib/x86_64-linux-gnu/libXm.4.0.4
So, whatever has changed between 4.0.3 and 4.0.4 has broken some API
calls. It's hard for us to debug this from the application side b/c it
generates a segfault, which causes the application to crash.
Example of what causes the crash. When our application generates a child
window which has text field widgets like a text field or textarea,
typing into the field causes this crash.
Any ideas on why the new version would cause these crashes? Looking at the
release notes (/usr/share/doc/libmotif-dev/RELNOTES.gz), I see there were a
number of bug fixes. Is it possible one of these fixes caused another bug?
Thanks in advance.
Quang
** Affects: unity (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1472826
Title:
Motif library v4.0.4 causes segfault in legacy app
Status in unity package in Ubuntu:
New
Bug description:
Our group develops an X application that uses the Motif Library (package
libxm4 v2.3.4-5). It appears that in the latest version of libXm.4.0.4 on
Trusty (14.04), on certain types of X events, it causes a segfault. I've
isolated this to a particular version of the library and OS rev. Our
application works fine for OS older than 14.04, ie 12.04 etc. I also confirmed
the version issue by copying libXm.4.0.3 from a 12.04 machine onto a 14.04
machine and it allows the program to work normally. I basically copied
libXm.4.0.3 from a 12.04 machine to the 14.04 machine and created a symlink to
it:
ln -s /usr/lib/x86_64-linux-gnu/libXm.4.0.3
/usr/lib/x86_64-linux-gnu/libXm.4.0.4
So, whatever has changed between 4.0.3 and 4.0.4 has broken some API
calls. It's hard for us to debug this from the application side b/c it
generates a segfault, which causes the application to crash.
Example of what causes the crash. When our application generates a
child window which has text field widgets like a text field or
textarea, typing into the field causes this crash.
Any ideas on why the new version would cause these crashes? Looking at the
release notes (/usr/share/doc/libmotif-dev/RELNOTES.gz), I see there were a
number of bug fixes. Is it possible one of these fixes caused another bug?
Thanks in advance.
Quang
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