[Bug other/95362] New: [11 regression] pr34457-1.c fails on arm since ga746f952abb78af9db28a7f3bce442e113877c9c

[Bug other/95362] New: [11 regression] pr34457-1.c fails on arm since ga746f952abb78af9db28a7f3bce442e113877c9c

[clyon at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95362

            Bug ID: 95362
           Summary: [11 regression] pr34457-1.c fails on arm since
                    ga746f952abb78af9db28a7f3bce442e113877c9c
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: other
          Assignee: unassigned at gcc dot gnu.org
          Reporter: clyon at gcc dot gnu.org
  Target Milestone: ---

Hi,

since ga746f952abb78af9db28a7f3bce442e113877c9c, I've noticed that
pr34457-1.c fails on arm and aarch64:

FAIL: gcc.dg/pr34457-1.c (internal compiler error)
FAIL: gcc.dg/pr34457-1.c (test for excess errors)
Excess errors:
during IPA pass: cp
lto1: internal compiler error: in operator[], at vec.h:867
0x99feed vec<lto_encoder_entry, va_heap, vl_embed>::operator[](unsigned int)
        /gcc/vec.h:867
0x99feed vec<lto_encoder_entry, va_heap, vl_ptr>::operator[](unsigned int)
        /gcc/vec.h:1433
0x99feed lto_symtab_encoder_deref
        /gcc/lto-streamer.h:1173
0x99feed ipa_prop_read_section
        /gcc/ipa-prop.c:5060
0x99feed ipa_prop_read_jump_functions()
        /gcc/ipa-prop.c:5089
0xaf2fb1 ipa_read_summaries_1
        /gcc/passes.c:2837
0x64b9a5 read_cgraph_and_symbols(unsigned int, char const**)
        /gcc/lto/lto-common.c:2921
0x62d432 lto_main()
        /gcc/lto/lto.c:625
lto-wrapper: fatal error:
/aci-gcc-fsf/builds/gcc-fsf-gccsrc/obj-arm-none-linux-gnueabi/gcc3/gcc/xgcc
returned 1 exit status
compilation terminated.
/aci-gcc-fsf/builds/gcc-fsf-gccsrc/tools/arm-none-linux-gnueabi/bin/ld: error:
lto-wrapper failed

[Bug other/95362] [11 regression] pr34457-1.c and pr92088-1.c fail on arm and aarch64 since ga746f952abb78af9db28a7f3bce442e113877c9c

[clyon at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95362

Christophe Lyon <clyon at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[11 regression] pr34457-1.c |[11 regression] pr34457-1.c
                   |fails on arm since          |and pr92088-1.c fail on arm
                   |ga746f952abb78af9db28a7f3bc |and aarch64 since
                   |e442e113877c9c              |ga746f952abb78af9db28a7f3bc
                   |                            |e442e113877c9c

--- Comment #1 from Christophe Lyon <clyon at gcc dot gnu.org> ---
FAIL: gcc.dg/torture/pr92088-1.c   -O2 -flto -fno-use-linker-plugin
-flto-partition=none  (internal compiler error)
FAIL: gcc.dg/torture/pr92088-1.c   -O2 -flto -fno-use-linker-plugin
-flto-partition=none  (test for excess errors)
Excess errors:
during IPA pass: cp
lto1: internal compiler error: Segmentation fault
0xbd698f crash_signal
        /gcc/toplev.c:328
0x8b9244 unshare_expr_without_location(tree_node*)
        /gcc/gimplify.c:1039
0x9926eb ipa_set_jf_constant
        /gcc/ipa-prop.c:539
0x99e0b9 ipa_read_jump_function
        /gcc/ipa-prop.c:4629
0x99f357 ipa_read_edge_info
        /gcc/ipa-prop.c:4909
0x99fb91 ipa_read_node_info
        /gcc/ipa-prop.c:4978
0x99fb91 ipa_prop_read_section
        /gcc/ipa-prop.c:5062
0x99fb91 ipa_prop_read_jump_functions()
        /gcc/ipa-prop.c:5089
0xaf2fb1 ipa_read_summaries_1
        /gcc/passes.c:2837
0x64b9a5 read_cgraph_and_symbols(unsigned int, char const**)
        /gcc/lto/lto-common.c:2921
0x62d432 lto_main()
        /gcc/lto/lto.c:625
lto-wrapper: fatal error:
/aci-gcc-fsf/builds/gcc-fsf-gccsrc/obj-arm-none-linux-gnueabi/gcc3/gcc/xgcc
returned 1 exit status
compilation terminated.
collect2: fatal error: lto-wrapper returned 1 exit status
compilation terminated.

[Bug lto/95362] [11 regression] pr34457-1.c and pr92088-1.c fail on arm and aarch64 since g:a746f952abb78af9db28a7f3bce442e113877c9c

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95362

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2020-05-27
             Status|UNCONFIRMED                 |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |hubicka at gcc dot gnu.org
          Component|other                       |lto
                 CC|                            |hubicka at gcc dot gnu.org
     Ever confirmed|0                           |1

[Bug lto/95362] [11 regression] pr34457-1.c and pr92088-1.c fail on arm and aarch64 since g:a746f952abb78af9db28a7f3bce442e113877c9c

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95362

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|arm aarch64                 |arm, aarch64, x86_64

--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
One can reproduce that on x86_64-linux-gnu as well:

$ cat ice.c
void bar();

int
main(int argc, char **argv) {
  struct s {
    char b[argc];
  };

  void nested(struct s x) {}
  bar(nested);

  return 0;
}

$ gcc -O2 -flto ice.c
during IPA pass: cp
lto1: internal compiler error: in operator[], at vec.h:867
0x665956 vec<ipa_jump_func, va_gc, vl_embed>::operator[](unsigned int)
        /home/marxin/Programming/gcc/gcc/vec.h:867
0x665956 ipa_get_ith_jump_func
        /home/marxin/Programming/gcc/gcc/ipa-prop.h:825
0x667e38 vec<lto_encoder_entry, va_heap, vl_ptr>::operator[](unsigned int)
        /home/marxin/Programming/gcc/gcc/alloc-pool.h:260
0x667e38 lto_symtab_encoder_deref
        /home/marxin/Programming/gcc/gcc/lto-streamer.h:1173
0x667e38 ipa_prop_read_section
        /home/marxin/Programming/gcc/gcc/ipa-prop.c:5059
0x667e38 ipa_prop_read_jump_functions()
        /home/marxin/Programming/gcc/gcc/ipa-prop.c:5089
0xc5299e ipa_read_summaries_1
        /home/marxin/Programming/gcc/gcc/passes.c:2837
0x850cec read_cgraph_and_symbols(unsigned int, char const**)
        /home/marxin/Programming/gcc/gcc/lto/lto-common.c:2921
0x837a52 lto_main()
        /home/marxin/Programming/gcc/gcc/lto/lto.c:625
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
lto-wrapper: fatal error: gcc returned 1 exit status
compilation terminated.
/usr/bin/ld: error: lto-wrapper failed
collect2: error: ld returned 1 exit status

[Bug lto/95362] [11 regression] pr34457-1.c and pr92088-1.c fail on arm and aarch64 since g:a746f952abb78af9db28a7f3bce442e113877c9c

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95362

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |11.0

[Bug lto/95362] [11 regression] pr34457-1.c and pr92088-1.c fail on arm and aarch64 since g:a746f952abb78af9db28a7f3bce442e113877c9c

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95362

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

https://gcc.gnu.org/g:11041c3151e30d197d1c2774721db24332eeccef

commit r11-716-g11041c3151e30d197d1c2774721db24332eeccef
Author: Jan Hubicka <jh@suse.cz>
Date:   Fri May 29 12:25:48 2020 +0200

    Fix streamer desynchornization caused by streamer debugging patch

    it turns out I lost one hunk in the patch disabling extra streaming
    which causes streamer to go out of sync in the case non-trivial scc
    containing the node being streamed appears in local stream (which seems
    quite rare since it does not happen during bootstrap).

    2020-05-29  Jan Hubicka  <hubicka@ucw.cz>

            PR lto/95362
            * lto-streamer-out.c (lto_output_tree): Disable redundant
streaming.

[Bug lto/95362] [11 regression] pr34457-1.c and pr92088-1.c fail on arm and aarch64 since g:a746f952abb78af9db28a7f3bce442e113877c9c

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95362

--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-10 branch has been updated by Jan Hubicka
<hubicka@gcc.gnu.org>:

https://gcc.gnu.org/g:630474c8904cf797d0ee022d2ab177e25932c1d7

commit r10-8629-g630474c8904cf797d0ee022d2ab177e25932c1d7
Author: Jan Hubicka <jh@suse.cz>
Date:   Fri May 29 12:25:48 2020 +0200

    Fix streamer desynchornization caused by streamer debugging patch

    it turns out I lost one hunk in the patch disabling extra streaming
    which causes streamer to go out of sync in the case non-trivial scc
    containing the node being streamed appears in local stream (which seems
    quite rare since it does not happen during bootstrap).

    2020-05-29  Jan Hubicka  <hubicka@ucw.cz>

            PR lto/95362
            * lto-streamer-out.c (lto_output_tree): Disable redundant
streaming.

    (cherry picked from commit 11041c3151e30d197d1c2774721db24332eeccef)

[Bug lto/95362] [11 regression] pr34457-1.c and pr92088-1.c fail on arm and aarch64 since g:a746f952abb78af9db28a7f3bce442e113877c9c

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95362

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

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

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.

[Bug lto/95362] [11 regression] pr34457-1.c and pr92088-1.c fail on arm and aarch64 since g:a746f952abb78af9db28a7f3bce442e113877c9c

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95362

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |seurer at linux dot vnet.ibm.com

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
*** Bug 95376 has been marked as a duplicate of this bug. ***