[Bug c/60693] New: ICE on funny memcpy

[Bug c/60693] New: ICE on funny memcpy

[luto at mit dot edu]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60693

            Bug ID: 60693
           Summary: ICE on funny memcpy
           Product: gcc
           Version: 4.8.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: luto at mit dot edu

This little program:

int main()
{
  char buf[4096];
  memcpy(buf, (void *)0xffffffffff600000, 4096);

  return 0;
}

does this:

$ gcc ice.c
ice.c: In function ‘main’:
ice.c:4:3: warning: incompatible implicit declaration of built-in function
‘memcpy’ [enabled by default]
   memcpy(buf, (void *)0xffffffffff600000, 4096);
   ^
ice.c:4:9: internal compiler error: in ix86_copy_addr_to_reg, at
config/i386/i386.c:21886
   memcpy(buf, (void *)0xffffffffff600000, 4096);
         ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://bugzilla.redhat.com/bugzilla> for instructions.
Preprocessed source stored into /tmp/ccJqACry.out file, please attach this to
your bugreport.


This is gcc (GCC) 4.8.2 20131212 (Red Hat 4.8.2-7).
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From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/60693] ICE on funny memcpy
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id`693

Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
      Known to work|                            |4.7.3
   Last reconfirmed|                            |2014-03-28
          Component|c                           |target
                 CC|                            |hjl at gcc dot gnu.org,
                   |                            |trippels at gcc dot gnu.org
     Ever confirmed|0                           |1
   Target Milestone|---                         |4.8.3
      Known to fail|                            |4.8.3, 4.9.0

--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Started with r203486.

[Bug target/60693] ICE on funny memcpy

[trippels at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60693

--- Comment #2 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
And with r204338 on the 4.8 branch.

[Bug target/60693] [4.8/4.9 Regression] ICE on funny memcpy

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60693

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P1
            Summary|ICE on funny memcpy         |[4.8/4.9 Regression] ICE on
                   |                            |funny memcpy

[Bug target/60693] [4.8/4.9 Regression] ICE on funny memcpy

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60693

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

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

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 32472
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32472&action=edit
gcc49-pr60693.patch

Untested fix.

[Bug target/60693] [4.8/4.9 Regression] ICE on funny memcpy

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60693

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Mar 28 19:31:17 2014
New Revision: 208915

URL: http://gcc.gnu.org/viewcvs?rev=208915&root=gcc&view=rev
Log:
    PR target/60693
    * config/i386/i386.c (ix86_copy_addr_to_reg): Call copy_addr_to_reg
    also if addr has VOIDmode.

    * gcc.target/i386/pr60693.c: New test.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr60693.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/testsuite/ChangeLog

[Bug target/60693] [4.8 Regression] ICE on funny memcpy

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60693

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |4.9.0
            Summary|[4.8/4.9 Regression] ICE on |[4.8 Regression] ICE on
                   |funny memcpy                |funny memcpy
      Known to fail|4.9.0                       |

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.

[Bug target/60693] [4.8 Regression] ICE on funny memcpy

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60693

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Apr 10 07:57:09 2014
New Revision: 209268

URL: http://gcc.gnu.org/viewcvs?rev=209268&root=gcc&view=rev
Log:
    Backport from mainline
    2014-03-28  Jakub Jelinek  <jakub@redhat.com>

    PR target/60693
    * config/i386/i386.c (ix86_copy_addr_to_reg): Call copy_addr_to_reg
    also if addr has VOIDmode.

    * gcc.target/i386/pr60693.c: New test.

Added:
    branches/gcc-4_8-branch/gcc/testsuite/gcc.target/i386/pr60693.c
Modified:
    branches/gcc-4_8-branch/gcc/ChangeLog
    branches/gcc-4_8-branch/gcc/config/i386/i386.c
    branches/gcc-4_8-branch/gcc/testsuite/ChangeLog

[Bug target/60693] [4.8 Regression] ICE on funny memcpy

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60693

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

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

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.

[Bug target/60693] [4.8 Regression] ICE on funny memcpy

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60693

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |filip.svoboda at netajo dot cz

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
*** Bug 61988 has been marked as a duplicate of this bug. ***