libre2-0-dbg 0+hg23+dfsg-1 (amd64 binary) in ubuntu maverick

 RE2 is a fast, safe, thread-friendly alternative to backtracking regular
 expression engines like those used in PCRE, Perl, and Python. It is a C++
 library.
 .
 This package contains the debugging symbols associated with RE2. gdb will
 automatically use these symbols when debugging programs linked with RE2.