[Bug c++/11616] New: Error message "instantiated from here" gives wrong location

[Bug c++/11616] New: Error message "instantiated from here" gives wrong location

[reichelt at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11616

           Summary: Error message "instantiated from here" gives wrong
                    location
           Product: gcc
           Version: 3.3
            Status: UNCONFIRMED
          Keywords: diagnostic
          Severity: minor
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: reichelt at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org

Consider the following invalid code:

----------------------------------------------
     1	template <int> struct A
     2	{
     3	    static const int i=0;
     4	};
     5	
     6	int baz() { return A<0>::i; }
     7	
     8	struct B
     9	{
    10	    static void foo (int);
    11	};
    12	
    13	template <typename T> struct C
    14	{
    15	    virtual void bar() const { T::foo(); }
    16	};
    17	
    18	C<B> c;
----------------------------------------------

Compiling this with g++ gives the following error message:

file.cc: In member function `void C<T>::bar() const [with T = B]':
file.cc:6:   instantiated from here
file.cc:15: error: no matching function for call to `B::foo()'
file.cc:10: note: candidates are: static void B::foo(int)

The line number "6" in line 2 of the error message is obviously bogus.
It should read "18" instead.
The bug happened to me in a more complex situation where even the
file name was wrong. In such a case it is very difficult to find the
point of instantiation by hand. :-(

All versions since 2.95.x seem to be affected (including 3.3 branch and
mainline).

[Bug c++/11616] Error message "instantiated from here" gives wrong location

[bangerth at dealii dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11616


bangerth at dealii dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2003-07-21 16:59:10
               date|                            |


------- Additional Comments From bangerth at dealii dot org  2003-07-21 16:59 -------
Confirmed indeed.

[Bug c++/11616] Error message "instantiated from here" gives wrong location

[pinskia at physics dot uc dot edu]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11616


pinskia at physics dot uc dot edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|2003-07-21 16:59:10         |2003-08-05 19:10:07
               date|                            |


------- Additional Comments From pinskia at physics dot uc dot edu  2003-08-05 19:10 -------
I want to say the line mappings stack is wrong (or got currupted).

[Bug c++/11616] Error message "instantiated from here" gives wrong location

[dhazeghi at yahoo dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11616


dhazeghi at yahoo dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|3.4                         |---

[Bug c++/11616] Error message "instantiated from here" gives wrong location

[lerdsuwa at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11616


lerdsuwa at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |lerdsuwa at gcc dot gnu dot
                   |dot org                     |org
             Status|NEW                         |ASSIGNED


------- Additional Comments From lerdsuwa at gcc dot gnu dot org  2003-11-05 14:01 -------
Patch in progress.

[Bug c++/11616] Error message "instantiated from here" gives wrong location

[lerdsuwa at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11616


lerdsuwa at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


------- Additional Comments From lerdsuwa at gcc dot gnu dot org  2003-11-05 14:38 -------
Fixed in the mainline.

[Bug c++/11616] Error message "instantiated from here" gives wrong location

[cvs-commit at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11616



------- Additional Comments From cvs-commit at gcc dot gnu dot org  2003-11-05 14:38 -------
Subject: Bug 11616

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	lerdsuwa@gcc.gnu.org	2003-11-05 14:37:58

Modified files:
	gcc/cp         : ChangeLog pt.c 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/g++.dg/template: instantiate5.C 

Log message:
	PR c++/11616
	* pt.c (instantiate_pending_templates): Save and restore
	input_location.
	
	* g++.dg/template/instantiate5.C: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/ChangeLog.diff?cvsroot=gcc&r1=1.3749&r2=1.3750
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/pt.c.diff?cvsroot=gcc&r1=1.791&r2=1.792
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.3167&r2=1.3168
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/template/instantiate5.C.diff?cvsroot=gcc&r1=NONE&r2=1.1

[Bug c++/11616] Error message "instantiated from here" gives wrong location

[lerdsuwa at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11616


lerdsuwa at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |3.4