[Bug tree-optimization/103759] New: [12 Regression] memcpy-chk failure for 32 bits

[Bug tree-optimization/103759] New: [12 Regression] memcpy-chk failure for 32 bits

[dje at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103759

            Bug ID: 103759
           Summary: [12 Regression] memcpy-chk failure for 32 bits
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dje at gcc dot gnu.org
  Target Milestone: ---
            Target: powerpc-*-* i386-*-*

memcpy-chk, memmove-chk, mempcpy-chk, memset-chk, stpcpy-chk test cases now all
fail in 32 bit mode.

https://gcc.gnu.org/pipermail/gcc-testresults/2021-December/742567.html
https://gcc.gnu.org/pipermail/gcc-testresults/2021-December/742553.html
https://gcc.gnu.org/pipermail/gcc-testresults/2021-December/742564.html
https://gcc.gnu.org/pipermail/gcc-testresults/2021-December/742535.html

between r12-6029 and r12-6031

[Bug tree-optimization/103759] [12 Regression] memcpy-chk failure for 32 bits

[dje at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103759

David Edelsohn <dje at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2021-12-17
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from David Edelsohn <dje at gcc dot gnu.org> ---
Confirmed

[Bug tree-optimization/103759] [12 Regression] memcpy-chk failure for 32 bits

[siddhesh at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103759

Siddhesh Poyarekar <siddhesh at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |siddhesh at gcc dot gnu.org

[Bug tree-optimization/103759] [12 Regression] memcpy-chk failure for 32 bits

[siddhesh at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103759

--- Comment #2 from Siddhesh Poyarekar <siddhesh at gcc dot gnu.org> ---
I've posted a candidate fix:

https://patchwork.sourceware.org/project/gcc/patch/20211217212347.72617-1-siddhesh@gotplt.org/

[Bug tree-optimization/103759] [12 Regression] memcpy-chk failure for 32 bits

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103759

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

https://gcc.gnu.org/g:cc032ec1ecb34b006f42e170ccb9d76aa42fd8eb

commit r12-6056-gcc032ec1ecb34b006f42e170ccb9d76aa42fd8eb
Author: Siddhesh Poyarekar <siddhesh@gotplt.org>
Date:   Sat Dec 18 16:46:43 2021 +0530

    tree-optimization/103759: Use sizetype everywhere for object sizes

    Since all computations in tree-object-size are now done in sizetype and
    not HOST_WIDE_INT, comparisons with HOST_WIDE_INT based unknown and
    initval would be incorrect.  Instead, use the sizetype trees directly to
    generate and evaluate initval and unknown size values.

    gcc/ChangeLog:

            PR tree-optimization/103759
            * tree-object-size.c (unknown, initval): Remove functions.
            (size_unknown, size_initval, size_unknown_p): Operate directly
            on trees.

    Signed-off-by: Siddhesh Poyarekar <siddhesh@gotplt.org>

[Bug tree-optimization/103759] [12 Regression] memcpy-chk failure for 32 bits

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103759

Martin Liška <marxin at gcc dot gnu.org> changed:

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

--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Can we close it as fixed?

[Bug tree-optimization/103759] [12 Regression] memcpy-chk failure for 32 bits

[dje at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103759

David Edelsohn <dje at gcc dot gnu.org> changed:

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

--- Comment #5 from David Edelsohn <dje at gcc dot gnu.org> ---
Fixed.