[Bug c++/9946] New: gdb does not understand DW_TAG_template_value_param

[Bug c++/9946] New: gdb does not understand DW_TAG_template_value_param

[tromey at redhat dot com]

We have a g++ that has been modified to emit DW_TAG_template_value_param.
However, gdb does not then make the corresponding symbols visible
to the user.

A simple test case is something like:

#include <stdio.h>

template<int X>
class T
{
public:
  T()
  {
    printf ("%d\n", X);
  }
};

int main()
{
  T<23> t;
  return 0;
}

If you break in the constructor, "print X" should show "23".

-- 
           Summary: gdb does not understand DW_TAG_template_value_param
           Product: gdb
           Version: 6.8
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at sourceware dot org
        ReportedBy: tromey at redhat dot com
                CC: gdb-prs at sourceware dot org


http://sourceware.org/bugzilla/show_bug.cgi?id=9946

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[Bug c++/9946] gdb does not understand DW_TAG_template_value_param

[tromey at redhat dot com]

------- Additional Comments From tromey at redhat dot com  2009-09-02 18:37 -------
*** Bug 10590 has been marked as a duplicate of this bug. ***

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           What    |Removed                     |Added
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                 CC|                            |dodji at redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=9946

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[Bug c++/9946] gdb does not understand DW_TAG_template_value_param

[pmuldoon at redhat dot com]

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           What    |Removed                     |Added
----------------------------------------------------------------------------
OtherBugsDependingO|                            |11060
              nThis|                            |


http://sourceware.org/bugzilla/show_bug.cgi?id=9946

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[Bug c++/9946] gdb does not understand DW_TAG_template_value_param

[swagiaal at redhat dot com]

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           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |swagiaal at redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=9946

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[Bug c++/9946] gdb does not understand DW_TAG_template_value_param

[tromey at redhat dot com]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
OtherBugsDependingO|11060                       |
              nThis|                            |
         AssignedTo|unassigned at sourceware dot|tromey at redhat dot com
                   |org                         |
             Status|UNCONFIRMED                 |ASSIGNED
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2010-05-25 17:48:33
               date|                            |


http://sourceware.org/bugzilla/show_bug.cgi?id=9946

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[Bug c++/9946] gdb does not understand DW_TAG_template_value_param

[tromey at redhat dot com]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
OtherBugsDependingO|                            |11060
              nThis|                            |


http://sourceware.org/bugzilla/show_bug.cgi?id=9946

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[Bug c++/9946] gdb does not understand DW_TAG_template_value_param

[tromey at redhat dot com]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2010-07-28 16:24 -------
Subject: Bug 9946

CVSROOT:	/cvs/src
Module name:	src
Changes by:	tromey@sourceware.org	2010-07-28 16:24:00

Modified files:
	gdb            : ChangeLog cp-namespace.c cp-support.h 
	                 dwarf2read.c gdbtypes.c gdbtypes.h objfiles.c 
	                 objfiles.h symfile.c symtab.c symtab.h 
	gdb/testsuite  : ChangeLog 
Added files:
	gdb/testsuite/gdb.cp: temargs.cc temargs.exp 

Log message:
	gdb
	PR c++/9946:
	* symfile.c (reread_symbols): Clear template_symbols.
	* symtab.h (struct symbol) <is_cplus_template_function>: New
	field.
	(SYMBOL_IS_CPLUS_TEMPLATE_FUNCTION): New macro.
	(struct template_symbol): New.
	* symtab.c (lookup_symbol_aux_local): Use
	cp_lookup_symbol_imports_or_template.
	* objfiles.h (struct objfile) <template_symbols>: New field.
	* objfiles.c (relocate_one_symbol): New function.
	(objfile_relocate1): Use it.  Relocate isolated symbols.
	* gdbtypes.h (struct cplus_struct_type) <n_template_arguments,
	template_arguments>: New fields.
	(TYPE_N_TEMPLATE_ARGUMENTS): New macro.
	(TYPE_TEMPLATE_ARGUMENTS): Likewise.
	(TYPE_TEMPLATE_ARGUMENT): Likewise.
	(lookup_typename): Update.
	* gdbtypes.c (lookup_typename): Constify "block" argument.
	* dwarf2read.c: Include vec.h.
	(symbolp): New typedef.
	(read_func_scope): Read template arguments.  Allocate a
	template_symbol when needed.
	(read_structure_type): Read template arguments.
	(new_symbol_full): New function, from new_symbol.  Handle
	DW_TAG_template_type_param and DW_TAG_template_value_param.
	(new_symbol): Rewrite as wrapper.
	* cp-support.h (cp_lookup_symbol_imports_or_template): Declare.
	* cp-namespace.c: Include language.h.
	(search_symbol_list): New function.
	(cp_lookup_symbol_imports_or_template): Likewise.
	gdb/testsuite
	PR c++/9946:
	* gdb.cp/temargs.exp: New file.
	* gdb.cp/temargs.cc: New file.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/ChangeLog.diff?cvsroot=src&r1=1.12035&r2=1.12036
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/cp-namespace.c.diff?cvsroot=src&r1=1.43&r2=1.44
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/cp-support.h.diff?cvsroot=src&r1=1.38&r2=1.39
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/dwarf2read.c.diff?cvsroot=src&r1=1.429&r2=1.430
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/gdbtypes.c.diff?cvsroot=src&r1=1.195&r2=1.196
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/gdbtypes.h.diff?cvsroot=src&r1=1.133&r2=1.134
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/objfiles.c.diff?cvsroot=src&r1=1.116&r2=1.117
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/objfiles.h.diff?cvsroot=src&r1=1.72&r2=1.73
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/symfile.c.diff?cvsroot=src&r1=1.291&r2=1.292
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/symtab.c.diff?cvsroot=src&r1=1.246&r2=1.247
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/symtab.h.diff?cvsroot=src&r1=1.159&r2=1.160
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/ChangeLog.diff?cvsroot=src&r1=1.2393&r2=1.2394
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.cp/temargs.cc.diff?cvsroot=src&r1=NONE&r2=1.1
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.cp/temargs.exp.diff?cvsroot=src&r1=NONE&r2=1.1


------- Additional Comments From tromey at redhat dot com  2010-07-28 16:25 -------
I checked in the fix.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
OtherBugsDependingO|11060                       |
              nThis|                            |
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|6.8                         |7.3


http://sourceware.org/bugzilla/show_bug.cgi?id=9946

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[Bug c++/9946] gdb does not understand DW_TAG_template_value_param

[jan.kratochvil at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=9946

Jan Kratochvil <jan.kratochvil at redhat dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |jan.kratochvil at redhat
                   |                            |dot com

--- Comment #4 from Jan Kratochvil <jan.kratochvil at redhat dot com> 2010-11-14 03:47:00 UTC ---
Re: Regression gdb.cp/temargs.exp: test value of P in inner_m
http://sourceware.org/ml/gdb-patches/2010-08/msg00562.html
->
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41736

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