From a17d5a98417753708f385f0aab3a9cbcd2f1952a Mon Sep 17 00:00:00 2001 From: Paul Koning Date: Tue, 23 Oct 2012 14:44:27 -0400 Subject: re PR debug/54508 (Wrong debug information emitted if data members not referenced) PR debug/54508 * dwarf2out.c (prune_unused_types_prune): If pruning a class and not all its children were marked, add DW_AT_declaration flag. * g++.dg/debug/dwarf2/pr54508.C: New. From-SVN: r192739 --- gcc/dwarf2out.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) (limited to 'gcc/dwarf2out.c') diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c index bc5868b..bed3d67 100644 --- a/gcc/dwarf2out.c +++ b/gcc/dwarf2out.c @@ -21220,6 +21220,7 @@ static void prune_unused_types_prune (dw_die_ref die) { dw_die_ref c; + int pruned = 0; gcc_assert (die->die_mark); prune_unused_types_update_strings (die); @@ -21242,13 +21243,24 @@ prune_unused_types_prune (dw_die_ref die) prev->die_sib = c->die_sib; die->die_child = prev; } - return; + pruned = 1; + goto finished; } if (c != prev->die_sib) - prev->die_sib = c; + { + prev->die_sib = c; + pruned = 1; + } prune_unused_types_prune (c); } while (c != die->die_child); + + finished: + /* If we pruned children, and this is a class, mark it as a + declaration to inform debuggers that this is not a complete + class definition. */ + if (pruned && die->die_mark == 1 && class_scope_p (die)) + add_AT_flag (die, DW_AT_declaration, 1); } /* Remove dies representing declarations that we never use. */ -- cgit v1.1