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Date: Tue, 22 Jun 2010 22:55:00 -0000
Subject: [Bug c++/44641]  New: Generated constructors and destructors get wrong debug location when a typedef uses a forward declaration of the type before the definition
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From: "jyasskin at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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$ cat test.ii
# 1 "bad.h" 1
template <class A> struct MisplacedDbg;
# 1 "good.cc"
struct Arg;
typedef MisplacedDbg<Arg> Typedef;
template<typename T> struct Base  {
  virtual ~Base() {
  }
};
template <class A> struct MisplacedDbg : public Base<int> {
};
static MisplacedDbg<Arg> static_var;
$ g++-4.6svn -c -g test.ii
$ objdump -d -l test.o|grep -B2 'bad.h:1'
0000000000000000 <_ZN12MisplacedDbgI3ArgEC1Ev>:
MisplacedDbg():
/home/jyasskin/tmp/bad.h:1
--
0000000000000000 <_ZN12MisplacedDbgI3ArgED1Ev>:
~MisplacedDbg():
/home/jyasskin/tmp/bad.h:1
$

This causes problems for Gold's ODR violation detector.


-- 
           Summary: Generated constructors and destructors get wrong debug
                    location when a typedef uses a forward declaration of
                    the type before the definition
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jyasskin at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44641