So far I've only noticed it via a test, but everyone uses *printf,
and malloc is implicated due to recent arena-related changes:
malloc deadlock makes *printf hang
http://bugzilla.redhat.com/753601
With glibc-2.14.90-15.2.x86_64 (f16-testing and rawhide), this hangs:
( ulimit -v 10000; env printf %20000000f 0 )
Hah! As I was writing this, I noticed a new glibc commit.
http://sources.redhat.com/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=a5fb313cb7b7e692fd4684916aaa98e03ec7e8b6
Thanks for the quick fix, Andreas!
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