gdb-source 7.2-1ubuntu11 (i386 binary) in ubuntu natty

 GDB is a source-level debugger, capable of breaking programs at
 any specific line, displaying variable values, and determining
 where errors occurred. Currently, it works for C, C++, Fortran
 Modula 2 and Java programs. A must-have for any serious
 programmer.
 .
 This package contains the sources and patches which are needed
 to build GDB.