Although the base pointer register is not used when -fomit-frame-pointer
is used, looking at the assembly shows that the address at which we're
done pushing things on the stack does correspond to the line record
following the declaration's line record, so the heuristic indeed works
properly in that case as well. (I previously thought the right spot
should be the same as the entrypc, but hadn't looked closely enough at
the assembly).
git://sourceware.org / systemtap.git / commit