[Bug c++/60615] New: bad location in error from initializer

[Bug c++/60615] New: bad location in error from initializer

[tromey at gcc dot gnu.org]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60615

            Bug ID: 60615
           Summary: bad location in error from initializer
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: tromey at gcc dot gnu.org

Consider this source:

struct v
{
  int (*f1) (int);
  int (*f2) ();
  int (*f3) (int);
  int (*f4) (int);
};

int func(int x) { return x; }
int fv() { return 23; }

struct v inst = {
  func,
  func,
  func,
  func
}; // Line 17

Compile it with g++:

barimba. g++ --syntax-only pr.cc
pr.cc:17:1: error: invalid conversion from ‘int (*)(int)’ to ‘int (*)()’
[-fpermissive]
 }; // Line 17
 ^

Note that the error refers to line 17 and does not mention the field name
at all.  This is very inconvenient when one has a large struct of
function pointers -- it can be quite hard to find the actual location
of the problem.
>From gcc-bugs-return-447124-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 21 16:14:39 2014
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From: "tromey at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/60616] New: bad location from -Wunused-parameter
Date: Fri, 21 Mar 2014 16:14:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60616

            Bug ID: 60616
           Summary: bad location from -Wunused-parameter
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: tromey at gcc dot gnu.org

Consider this source code:

int whatever (int x,
          int y)
{
  return x;
}


Compile it with g++:

barimba. g++ -c -Wunused-parameter pr.cc
pr.cc:1:5: warning: unused parameter ‘y’ [-Wunused-parameter]
 int whatever (int x,
     ^


Note that the error message refers to the wrong location.
I think it should point to the 'y' on line 2.
>From gcc-bugs-return-447125-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 21 16:17:37 2014
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/60610] [4.9 Regression] ICE in convert_regs_1, at reg-stack.c:3064
Date: Fri, 21 Mar 2014 16:17:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60610

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
You need 32-bit non-multilib cc1.  I can reproduce this, looking into it now.
4.8 configured the same way would complain:
error: code model ‘large’ not supported in the 32 bit mode
sorry, unimplemented: 64-bit mode not compiled in
but 4.9 doesn't for some reason.
>From gcc-bugs-return-447126-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 21 16:25:11 2014
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From: "doko at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/60617] New: [4.8 Regression]
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id`617

            Bug ID: 60617
           Summary: [4.8 Regression]
           Product: gcc
           Version: 4.8.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: doko at gcc dot gnu.org

Created attachment 32424
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id2424&actioníit
preprocessed source

seen with the 4.8 branch on arm-linux-gnueabihf, configured with
--with-arch=armv7-a --with-fpu=vfpv3-d16 --with-float=hard --with-mode=thumb

omitting the -fno-tree-dce works around the issue.  not seen with the 4.7
branch and trunk 20140306.

$ g++ -std=c++11 -fPIC -fno-tree-dce -fno-exceptions -fno-omit-frame-pointer -c
-g -O2 JITArithmetic32_64.ii
../Source/JavaScriptCore/jit/JITArithmetic32_64.cpp: In member function 'void
JSC::JIT::emit_op_add(JSC::Instruction*)':
../Source/JavaScriptCore/jit/JITArithmetic32_64.cpp:526:1: error: unable to
find a register to spill in class 'LO_REGS'
../Source/JavaScriptCore/jit/JITArithmetic32_64.cpp:526:1: error: this is the
insn:
(insn 335 334 336 20 (parallel [
            (set (reg:SI 3 r3)
                (ior:SI (eq:SI (reg/v:SI 112 [ op ])
                        (reg/v:SI 110 [ dst ]))
                    (eq:SI (reg/v:SI 111 [ op ])
                        (reg/v:SI 110 [ dst ]))))
            (clobber (reg:CC 100 cc))
        ]) ../Source/JavaScriptCore/jit/JITArithmetic32_64.cpp:514 295
{*ior_scc_scc}
     (expr_list:REG_UNUSED (reg:CC 100 cc)
        (nil)))
../Source/JavaScriptCore/jit/JITArithmetic32_64.cpp:526: confused by earlier
errors, bailing out
Preprocessed source stored into /tmp/ccb0Osgc.out file, please attach this to
your bugreport.

[Bug c++/60615] bad location in error from initializer

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60615

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2014-07-29
                 CC|                            |mpolacek at gcc dot gnu.org
           Assignee|unassigned at gcc dot gnu.org      |mpolacek at gcc dot gnu.org
   Target Milestone|---                         |4.10.0
     Ever confirmed|0                           |1

--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Mine for now.

[Bug c++/60615] bad location in error from initializer

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60615

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|5.0                         |5.2

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 5.1 has been released.

[Bug c++/60615] bad location in error from initializer

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60615

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|5.2                         |5.3

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 5.2 is being released, adjusting target milestone to 5.3.