------- Comment #15 from jakub at gcc dot gnu dot org 2009-02-09 12:54 -------
And, even if decl_ultimate_origin checking is weakened and it actually looks
for ultimate origin for RESULT_DECLs, I'm not sure the generated debug info is
correct. The problem is that the tree NRV optimization is an optimization in
the current function only, it shouldn't affect inlined copies of that function.
When foo is inlined into bar, in bar there is some VAR_DECL with abstract
origin in foo's RESULT_DECL. In foo, if tree NRV kicks in, RESULT_DECL has
abstract origin some VAR_DECL. But that was a result of a local optimization
of foo, it doesn't mean that the VAR_DECL in bar with foo's RESULT_DECL as
abstract origin
should have that other var in foo as origin. Perhaps we'd need to emit a
virtual foo's info and then emit real out-of-line foo as "inlined instance" of
that virtual foo or something to get proper debug info.
--
jakub at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jason at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39086
