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(Observed with valgrind 3.2.1, fixed in 3.2.3)
Valgrind 3.2.1 sometimes produces supressions that don't work, like this:
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The identifying characteristic is that they begin with fun:_vg<something>
http://article.gmane.org/gmane.comp.debugging.valgrind/5939
explains what these symbols are.
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