[Bug tapsets/23879] print_ubacktrace can not print function name

[fche at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=23879

Frank Ch. Eigler <fche at redhat dot com> changed:

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                 CC|                            |fche at redhat dot com

--- Comment #2 from Frank Ch. Eigler <fche at redhat dot com> ---
It depends how the two versions of the target program were compiled.  Perhaps
the second one was stripped (including symbol info), so stap (and tools like
gdb) would have no chance to resolve addresses to names.  Perhaps the unwind
data was not generated the same way (possibly CFLAGS without
-fasynchronous-unwind-tables?).

A comparison with "readelf -S" between the two binaries could help clear this
up.

Also, that advice re. rerunning with -DDEBUG_UNWIND is a good one, the data
would help.

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