[Bug libgcc/110179] New: unwind-dw2-fde-dip.c:406: assignment makes integer from pointer without a cast

[Bug libgcc/110179] New: unwind-dw2-fde-dip.c:406: assignment makes integer from pointer without a cast

[dcb314 at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110179

            Bug ID: 110179
           Summary: unwind-dw2-fde-dip.c:406: assignment makes integer
                    from pointer without a cast
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libgcc
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dcb314 at hotmail dot com
  Target Milestone: ---

I just tried a build of gcc trunk with clang 16.04 on x86_64. 
It said:

libgcc/unwind-dw2-fde-dip.c:406:16: warning: assignment to ‘_Unwind_Ptr’ {aka
‘long unsigned int’} from ‘const unsigned char *’ makes integer from pointer
without a cast [-Wint-conversion]

Git blame says:

49310a9933 (Florian Weimer  2023-06-06 11:01:07 +0200 406)       eh_frame = p +
value;

This warning might be worth fixing. I suspect a cast will do it.

[Bug libgcc/110179] unwind-dw2-fde-dip.c:406: assignment makes integer from pointer without a cast

[dcb314 at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110179

David Binderman <dcb314 at hotmail dot com> changed:

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

--- Comment #1 from David Binderman <dcb314 at hotmail dot com> ---
Adding author of code.

[Bug libgcc/110179] unwind-dw2-fde-dip.c:406: assignment makes integer from pointer without a cast

[egallager at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110179

Eric Gallager <egallager at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |diagnostic
                 CC|                            |egallager at gcc dot gnu.org

--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
Does GCC's -Wint-conversion catch this, too? Might be something to consider in
the context of the discussion around GCC possibly turning on
-Werror=int-conversion by default.

[Bug libgcc/110179] unwind-dw2-fde-dip.c:406: assignment makes integer from pointer without a cast

[fw at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110179

Florian Weimer <fw at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2023-07-10
           Assignee|unassigned at gcc dot gnu.org      |fw at gcc dot gnu.org
           See Also|                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=109712

[Bug libgcc/110179] unwind-dw2-fde-dip.c:406: assignment makes integer from pointer without a cast

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110179

--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Florian Weimer <fw@gcc.gnu.org>:

https://gcc.gnu.org/g:104b09005229ef48a79a33511ea192bb3ec3c415

commit r14-2426-g104b09005229ef48a79a33511ea192bb3ec3c415
Author: Florian Weimer <fweimer@redhat.com>
Date:   Tue Jul 11 06:19:39 2023 +0200

    libgcc: Fix -Wint-conversion warning in find_fde_tail

    Fixes commit r14-1614-g49310a99330849 ("libgcc: Fix eh_frame fast path
    in find_fde_tail").

    libgcc/

            PR libgcc/110179
            * unwind-dw2-fde-dip.c (find_fde_tail): Add cast to avoid
            implicit conversion of pointer value to integer.

[Bug libgcc/110179] unwind-dw2-fde-dip.c:406: assignment makes integer from pointer without a cast

[fw at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110179

Florian Weimer <fw at gcc dot gnu.org> changed:

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

--- Comment #4 from Florian Weimer <fw at gcc dot gnu.org> ---
Fixed in trunk.

[Bug libgcc/110179] unwind-dw2-fde-dip.c:406: assignment makes integer from pointer without a cast

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110179

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-13 branch has been updated by Florian Weimer <fw@gcc.gnu.org>:

https://gcc.gnu.org/g:6f9dfb4d759146eebf7f88ad519010ea2191bf3a

commit r13-7583-g6f9dfb4d759146eebf7f88ad519010ea2191bf3a
Author: Florian Weimer <fweimer@redhat.com>
Date:   Tue Jul 11 06:19:39 2023 +0200

    libgcc: Fix -Wint-conversion warning in find_fde_tail

    Fixes commit r14-1614-g49310a99330849 ("libgcc: Fix eh_frame fast path
    in find_fde_tail").

    libgcc/

            PR libgcc/110179
            * unwind-dw2-fde-dip.c (find_fde_tail): Add cast to avoid
            implicit conversion of pointer value to integer.

    (cherry picked from commit 104b09005229ef48a79a33511ea192bb3ec3c415)