From: Siva Chandra <sivachandra@chromium.org>
Date: Tue, 9 Sep 2014 13:03:42 +0000 (-0700)
Subject: Fix gnuv3_pass_by_reference to lookup copy c-tors with qualified args.
X-Git-Tag: gdb-7.9.0-release~920
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=82c48ac732edb0155288a93ef3dd39625ff2d2e1;p=external%2Fbinutils.git

Fix gnuv3_pass_by_reference to lookup copy c-tors with qualified args.

Before this, a copy constructor declared as in the following snippet was
not being treated as a copy constructor.

class A
{
public:
  A (A &); // OK.
  A (const A &); // Not being treated as a copy constructor because of the
                 // 'const' qualifier.
};

gdb/ChangeLog:

	PR c++/13403
	PR c++/15154
	* gnu-v3-abi.c (gnuv3_pass_by_reference): Lookup copy constructors
	with qualified args.
---

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 9423d69..c33f6cc 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,10 @@
+2014-10-15  Siva Chandra Reddy  <sivachandra@google.com>
+
+	PR c++/13403
+	PR c++/15154
+	* gnu-v3-abi.c (gnuv3_pass_by_reference): Lookup copy constructors
+	with qualified args.
+
 2014-10-14  Joel Brobecker  <brobecker@adacore.com>
 
 	* ada-lang.c (ada_evaluate_subexp) <BINOP_ADD>: Add handling
diff --git a/gdb/gnu-v3-abi.c b/gdb/gnu-v3-abi.c
index d02c8bc..558ec06 100644
--- a/gdb/gnu-v3-abi.c
+++ b/gdb/gnu-v3-abi.c
@@ -1312,11 +1312,17 @@ gnuv3_pass_by_reference (struct type *type)
 
 	/* If this method takes two arguments, and the second argument is
 	   a reference to this class, then it is a copy constructor.  */
-	if (TYPE_NFIELDS (fieldtype) == 2
-	    && TYPE_CODE (TYPE_FIELD_TYPE (fieldtype, 1)) == TYPE_CODE_REF
-	    && check_typedef (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (fieldtype,
-								 1))) == type)
-	  return 1;
+	if (TYPE_NFIELDS (fieldtype) == 2)
+	  {
+	    struct type *arg_type = TYPE_FIELD_TYPE (fieldtype, 1);
+	    struct type *arg_target_type;
+
+	    arg_target_type = check_typedef (TYPE_TARGET_TYPE (arg_type));
+
+	    if (TYPE_CODE (arg_type) == TYPE_CODE_REF
+		&& class_types_same_p (arg_target_type, type))
+	      return 1;
+	  }
       }
 
   /* Even if all the constructors and destructors were artificial, one