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[Launchpad Bug Tracker <639796@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package ltrace - 0.5.3-2ubuntu6

---------------
ltrace (0.5.3-2ubuntu6) maverick; urgency=low

  * Fix ARM syscall_p to handle Thumb-2 mode (Zach Welch). LP: #639796.
 -- Matthias Klose <doko@xxxxxxxxxx>   Fri, 01 Oct 2010 16:06:14 +0200

** Changed in: ltrace (Ubuntu)
       Status: New => Fix Released

-- 
ltrace complains about unexpected instruction
https://bugs.launchpad.net/bugs/639796
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Status in “ltrace” package in Ubuntu: Fix Released

Bug description:
Binary package hint: ltrace

On an ARM Cortex-A9, ltrace complains about unexpected instruction.
For example:

$ ltrace ls
...
fclose(0x402785d8 <unfinished ...>
unexpected instruction 0xdf004667 at 0x40196892
unexpected instruction 0xdf004667 at 0x40196892
SYS_munmap(0x4006e000, 4096)                                                            = 0
<... fclose resumed> )                                                                  = 0
__fpending(0x40278678, 0, 0x40278538, 135880, 0)                                        = 0
fclose(0x40278678 <unfinished ...>
unexpected instruction 0xdf004667 at 0x40196892
unexpected instruction 0xdf004667 at 0x40196892
<... fclose resumed> )                                                                  = 0
unexpected instruction 0xdf004667 at 0x40196892
+++ exited (status 0) +++

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: ltrace 0.5.3-2ubuntu5
ProcVersionSignature: Ubuntu 2.6.35-ti903.8+ti+release2-omap4 2.6.35.3
Uname: Linux 2.6.35-ti903-omap4 armv7l
Architecture: armel
Date: Tue Sep 14 06:21:08 2010
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ltrace