http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51573
--- Comment #6 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-12-16
12:13:55 UTC ---
It's a really messed up situation as with the C++ units
void
bar1 (void)
{
extern void foo (int);
foo (0);
}
---
void
bar2 (void)
{
extern void foo (int);
foo (0);
}
---
void foo (int) {}
we _do_ need to enter the function local foo's for decl/cgraph merging.
But OTOH we cannot, as the merged decl can only appear in one BLOCK_VARS
list. ISTM that either the frontends should move those over to
BLOCK_NONLOCALIZED_DECLS or all frontends consistently need to put a
decl copy in BLOCK_VARS for the sake of debuginfo (still using the
global-scope decl for the actual call) - that is what the C frontend
is doing and that works quite well.
Jason? Can we please change the C++ frontend to mimic what the C
frontend does here? See c-decl.c:1199ff.
I'm testing another (temporary?) workaround, still prone to the above
issue.
