[fpc-devel] dwarf line info and try finally
lazarus at mfriebe.de
Sun Apr 20 20:06:04 CEST 2014
I added some code to the debugger, to allow stepping from a risen
exception, to a finally or except block.
And also to step correctly from the end of finally (reraise) to the next
However, the compiler does not add lineinfo for the finally
(FPC_POPADDRSTACK) or the end (reraise) statement.
1) When stepping into an finaly/except block (the IDE does this by
breaking in FPC_POPADDRSTACK and step out one) then the execution point
is still in the last statement before the finally/except. This is
because fpc added the FPC_POPADDRSTACK to the last statement in the try
2) If stepping ove the last command in a try/finally (entered as result
of an exception) then the ReRaise is part of the last statement.
Stepping over the last statement, will trigger the Reraise (and go to
the next finally/except)
Both are cosmetic, and the 2nd can even be seen as correct (though
probably not expected by many users).
Therefore would it be possible/acceptable to generate line info for the
Or point 1 might also be solvable by starting the line info of the first
command in the try/finally before the FPC_POPADDRSTACK
Also any ideas, if there is a way to identify implicit finally?
Currently one has to step through all of them.
More information about the fpc-devel