When passed a (acute) as an example:

#0  0xf763b489 in TextFilter::processText(char *, unsigned long, long) ()
   from /usr/lib/i386-linux-gnu/libibmeci.so
#1  0xf763ac20 in TextFilter::processGlobalFilters(char *, long, long) ()
   from /usr/lib/i386-linux-gnu/libibmeci.so
#2  0xf763a8da in TextFilter::addText(void *, long, long, long, long, ECIstate *, SynthThread *) () from /usr/lib/i386-linux-gnu/libibmeci.so
#3  0xf76276b8 in ECIinstance::eciAddText(void *, long, long, long, long) ()
   from /usr/lib/i386-linux-gnu/libibmeci.so
#4  0xf7624a46 in eciAddText2 () from /usr/lib/i386-linux-gnu/libibmeci.so
#5  0xf7618f8a in eciAddText () from /usr/lib/i386-linux-gnu/libibmeci.so
#6  0x0804d8fc in process_text_mark (
    part=part@entry=0xf4401e90 "Capricho \341rabe Francisco Tarrega", part_len=<optimized out>, 
    mark_name=<optimized out>) at ibmtts.c:895
#7  0x0804ef63 in _ibmtts_synth (nothing=0x0) at ibmtts.c:1031
#8  0xf768af70 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#9  0xf742abee in clone () from /lib/i386-linux-gnu/libc.so.6

Filing for the record.