[Bug c/105792] New: SPARC GCC 12.1.0 fails with internal compiler error: in expand_expr_real_2, at expr.cc:10160

[Bug c/105792] New: SPARC GCC 12.1.0 fails with internal compiler error: in expand_expr_real_2, at expr.cc:10160

[sumbera at volny dot cz]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105792

            Bug ID: 105792
           Summary: SPARC GCC 12.1.0 fails with internal compiler error:
                    in expand_expr_real_2, at expr.cc:10160
           Product: gcc
           Version: 12.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: sumbera at volny dot cz
  Target Milestone: ---

GDB and Qt5 fails with the same internal error when building with GCC 12.1.0 on
Solaris SPARC. GCC 11 works wiyhout problem. Following is GDB error output:

gmake[3]: Entering directory
'/scratch/psumbera/userland-test/components/gdb/build/sparcv9/readline/readline'
rm -f rltty.o
/usr/gcc/12/bin/gcc -std=gnu99 -c  -DHAVE_CONFIG_H   -I.
-I/scratch/psumbera/userland-test/components/gdb/gdb-10.2/readline/readline 
-DRL_LIBRARY_VERSION='"8.0"' -m64 -Wall -Wno-long-long -Wcast-align
-fno-omit-frame-pointer -O2 -mcpu=ultrasparc3 -mtune=niagara4
-mno-unaligned-doubles -mapp-regs -mhard-float
/scratch/psumbera/userland-test/components/gdb/gdb-10.2/readline/readline/rltty.c
during RTL pass: expand
In function 'save_tty_chars',
    inlined from 'rl_prep_terminal' at
/scratch/psumbera/userland-test/components/gdb/gdb-10.2/readline/readline/rltty.c:638:3:
/scratch/psumbera/userland-test/components/gdb/gdb-10.2/readline/readline/rltty.c:370:52:
internal compiler error: in expand_expr_real_2, at expr.cc:10160
  370 |   _rl_intr_char = _rl_tty_chars.t_intr = tiop->c_cc[VINTR];
      |                                          ~~~~~~~~~~^~~~~~~
0x1007f0ff3 expand_expr_real_2(separate_ops*, rtx_def*, machine_mode,
expand_modifier)
       
/builds/psumbera/userland-gcc-12.1.0/components/gcc12/gcc-12.1.0/gcc/expr.cc:10160
0x10069f793 expand_gimple_stmt_1
       
/builds/psumbera/userland-gcc-12.1.0/components/gcc12/gcc-12.1.0/gcc/cfgexpand.cc:3972
0x10069f793 expand_gimple_stmt
       
/builds/psumbera/userland-gcc-12.1.0/components/gcc12/gcc-12.1.0/gcc/cfgexpand.cc:4033
0x1006a5313 expand_gimple_basic_block
       
/builds/psumbera/userland-gcc-12.1.0/components/gcc12/gcc-12.1.0/gcc/cfgexpand.cc:6080
0x1006a71a7 execute
       
/builds/psumbera/userland-gcc-12.1.0/components/gcc12/gcc-12.1.0/gcc/cfgexpand.cc:6806
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
gmake[3]: *** [Makefile:105: rltty.o] Error 1
gmake[3]: Leaving directory
'/scratch/psumbera/userland-test/components/gdb/build/sparcv9/readline/readline'

--

Lowering optimization level to -O1 or -O0 helps (-O3 doesn't help).

Also when '-mcpu=ultrasparc3' isn't included it helps.

[Bug target/105792] SPARC GCC 12.1.0 fails with internal compiler error: in expand_expr_real_2, at expr.cc:10160

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105792

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Can you attach the preprocessed source ?

[Bug target/105792] SPARC GCC 12.1.0 fails with internal compiler error: in expand_expr_real_2, at expr.cc:10160

[sumbera at volny dot cz]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105792

--- Comment #2 from Petr Sumbera <sumbera at volny dot cz> ---
Created attachment 53060
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53060&action=edit
preprocessed source

[Bug target/105792] SPARC GCC 12.1.0 fails with internal compiler error: in expand_expr_real_2, at expr.cc:10160

[sam at gentoo dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105792

Sam James <sam at gentoo dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |sam at gentoo dot org

--- Comment #3 from Sam James <sam at gentoo dot org> ---
Might be related to bug 105292. Could you try gcc 12.1.1 (one of the snapshots,
ideally the latest)?

[Bug target/105792] SPARC GCC 12.1.0 fails with internal compiler error: in expand_expr_real_2, at expr.cc:10160

[sumbera at volny dot cz]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105792

--- Comment #4 from Petr Sumbera <sumbera at volny dot cz> ---
I can confirm that gcc (GCC) 12.1.1 20220528 doesn't have this issue.

[Bug target/105792] SPARC GCC 12.1.0 fails with internal compiler error: in expand_expr_real_2, at expr.cc:10160

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105792

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |12.2
                 CC|                            |ebotcazou at gcc dot gnu.org
         Resolution|---                         |DUPLICATE
             Status|UNCONFIRMED                 |RESOLVED

--- Comment #5 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
.

*** This bug has been marked as a duplicate of bug 105292 ***