* dwarf2read.c (inherit_abstract_dies): Work around GCC PR 40573.

	testsuite/
	* gdb.opt/inline-locals.exp: Remove XFAIL with duplicated arg1.

4 files changed, 34 insertions, 30 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 87eddc5..c6ac1f7 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2009-06-30  Daniel Jacobowitz  <dan@codesourcery.com>
+
+	* dwarf2read.c (inherit_abstract_dies): Work around GCC PR 40573.
+
 2009-06-30  Vladimir Prus  <vladimir@codesourcery.com>
 
 	* mi/mi-cmd-stack.c (parse_print_values): New.
diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c
index 218c85a..4b5f195 100644
--- a/gdb/dwarf2read.c
+++ b/gdb/dwarf2read.c
@@ -3331,14 +3331,24 @@ inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu)
   child_die = die->child;
   while (child_die && child_die->tag)
     {
-      attr = dwarf2_attr (child_die, DW_AT_abstract_origin, cu);
+      /* For each CHILD_DIE, find the corresponding child of
+	 ORIGIN_DIE.  If there is more than one layer of
+	 DW_AT_abstract_origin, follow them all; there shouldn't be,
+	 but GCC versions at least through 4.4 generate this (GCC PR
+	 40573).  */
+      struct die_info *child_origin_die = child_die;
+      while (1)
+	{
+	  attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, cu);
+	  if (attr == NULL)
+	    break;
+	  child_origin_die = follow_die_ref (child_origin_die, attr, &cu);
+	}
+
       /* According to DWARF3 3.3.8.2 #3 new entries without their abstract
 	 counterpart may exist.  */
-      if (attr)
+      if (child_origin_die != child_die)
 	{
-	  struct die_info *child_origin_die;
-
-	  child_origin_die = follow_die_ref (child_die, attr, &cu);
 	  if (child_die->tag != child_origin_die->tag
 	      && !(child_die->tag == DW_TAG_inlined_subroutine
 		   && child_origin_die->tag == DW_TAG_subprogram))
@@ -3346,7 +3356,13 @@ inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu)
 		       _("Child DIE 0x%x and its abstract origin 0x%x have "
 			 "different tags"), child_die->offset,
 		       child_origin_die->offset);
-	  *offsets_end++ = child_origin_die->offset;
+	  if (child_origin_die->parent != origin_die)
+	    complaint (&symfile_complaints,
+		       _("Child DIE 0x%x and its abstract origin 0x%x have "
+			 "different parents"), child_die->offset,
+		       child_origin_die->offset);
+	  else
+	    *offsets_end++ = child_origin_die->offset;
 	}
       child_die = sibling_die (child_die);
     }
diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 4c000a1..d08158e 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2009-06-30  Daniel Jacobowitz  <dan@codesourcery.com>
+
+	* gdb.opt/inline-locals.exp: Remove XFAIL with duplicated arg1.
+
 2009-06-30  Vladimir Prus  <vladimir@codesourcery.com>
 
 	* gdb.mi/mi-stack.exp: Testing symbolic options
diff --git a/gdb/testsuite/gdb.opt/inline-locals.exp b/gdb/testsuite/gdb.opt/inline-locals.exp
index cdc180a..f1f58cb 100644
--- a/gdb/testsuite/gdb.opt/inline-locals.exp
+++ b/gdb/testsuite/gdb.opt/inline-locals.exp
@@ -62,22 +62,9 @@ if { ! $no_frames } {
 	-re "arg1 = $decimal\r\n$gdb_prompt $" {
 	    pass $msg
 	}
-	-re "arg1 = <value optimized out>\r\narg1 = <value optimized out>\r\n$gdb_prompt $" {
-	    # GCC 4.4 loses location information for arg1 (like GCC
-	    # 4.3) and also generates a strange DIE tree that causes
-	    # us to display the argument twice: inlined func1 has the
-	    # abstract func1 for DW_AT_abstract_origin but its arg1
-	    # child has the out of line func1's arg1 for
-	    # DW_AT_abstract_origin, with a location list unrelated to
-	    # the inlined instance.
-	    if { [test_compiler_info "gcc-4-4-*"] || [test_compiler_info "gcc-4-5-*"] } {
-		setup_xfail *-*-* gcc/40573
-	    }
-	    fail $msg
-	}
 	-re "arg1 = <value optimized out>\r\n$gdb_prompt $" {
-	    # GCC 4.3 loses location information for arg1.  GCC 4.2 is OK.
-	    if { [test_compiler_info "gcc-4-3-*"] } {
+	    # GCC 4.3 and later lose location information for arg1.  GCC 4.2 is OK.
+	    if { [test_compiler_info "gcc-4-3-*"]  || [test_compiler_info "gcc-4-4-*"]} {
 		setup_xfail *-*-*
 	    }
 	    fail $msg
@@ -114,16 +101,9 @@ if { ! $no_frames } {
 	-re "arg1 = $decimal\r\n$gdb_prompt $" {
 	    pass $msg
 	}
-	-re "arg1 = <value optimized out>\r\narg1 = <value optimized out>\r\n$gdb_prompt $" {
-	    # See the similar GCC 4.4 XFAIL above for an explanation.
-	    if { [test_compiler_info "gcc-4-4-*"] || [test_compiler_info "gcc-4-5-*"] } {
-		setup_xfail *-*-* gcc/40573
-	    }
-	    fail $msg
-	}
 	-re "arg1 = <value optimized out>\r\n$gdb_prompt $" {
-	    # GCC 4.3 loses location information for arg1.  GCC 4.2 is OK.
-	    if { [test_compiler_info "gcc-4-3-*"] } {
+	    # GCC 4.3 and later lose location information for arg1.  GCC 4.2 is OK.
+	    if { [test_compiler_info "gcc-4-3-*"]  || [test_compiler_info "gcc-4-4-*"]} {
 		setup_xfail *-*-*
 	    }
 	    fail $msg