[PATCH, applied] dwarf-reader: compare_dies sometimes compares empty formal parms

[Dodji Seketeli <dodji@redhat.com>]

Hello,

compare_dies sometimes compares uninitialized DIE structs, which leads
to junk down the road.  Fixed thus.

	* src/abg-dwarf-reader.cc (compare_dies): Don't try to compare
	formal parameters if there is none.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
Applied to master.
---
 src/abg-dwarf-reader.cc | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/abg-dwarf-reader.cc b/src/abg-dwarf-reader.cc
index d43364f1..5cbf3e44 100644
--- a/src/abg-dwarf-reader.cc
+++ b/src/abg-dwarf-reader.cc
@@ -10634,9 +10634,10 @@ compare_dies(const read_context& ctxt,
 	bool l_type_is_void = !die_die_attribute(l, DW_AT_type, l_type);
 	bool r_type_is_void = !die_die_attribute(r, DW_AT_type, r_type);
 	if ((l_type_is_void != r_type_is_void)
-	    || !compare_dies(ctxt, &l_type, &r_type,
-			     aggregates_being_compared,
-			     update_canonical_dies_on_the_fly))
+	    || (!l_type_is_void
+		&& !compare_dies(ctxt, &l_type, &r_type,
+				 aggregates_being_compared,
+				 update_canonical_dies_on_the_fly)))
 	  result = false;
       }
       break;
-- 
2.36.1


-- 
		Dodji