GNU gdb 6.6-debian
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This GDB was configured as "i486-linux-gnu"...
(no debugging symbols found)
Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
(gdb) handle SIG33 pass nostop noprint
Signal        Stop	Print	Pass to program	Description
SIG33         No	No	Yes		Real-time event 33
(gdb) set pagination 0
(gdb) run
Starting program: /usr/bin/tilda 
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[Thread debugging using libthread_db enabled]
[New Thread -1219991872 (LWP 7232)]
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[New Thread -1221461104 (LWP 7239)]
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[New Thread -1229874288 (LWP 7242)]

Program exited normally.
(gdb) backtrace full
No stack.
(gdb) info registers
The program has no registers now.
(gdb) thread apply all backtrace
(gdb) quit