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From: "mjires at suse dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/112734] New: ICE verify_gimple failed since
 r14-3751-g8c984a1c3693df - BitInt
Date: Mon, 27 Nov 2023 19:52:34 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 14.0
X-Bugzilla-Keywords: ice-on-valid-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: mjires at suse dot cz
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D112734

            Bug ID: 112734
           Summary: ICE verify_gimple failed since
                    r14-3751-g8c984a1c3693df - BitInt
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: mjires at suse dot cz
                CC: jakub at redhat dot com
  Target Milestone: ---

Compiling reduced testcase gcc.dg/torture/bitint-3.c results in ICE.

$ cat bitint-3.c
_BitInt(128) out;
void main() {
  _BitInt(8) q[1];
  out -=3D 1;
}


$ gcc bitint-3.c -fnon-call-exceptions -ftrapv
bitint-3.c: In function =E2=80=98main=E2=80=99:
bitint-3.c:2:6: error: statement marked for throw in middle of block
    2 | void main() {
      |      ^~~~
_7 =3D _8 + -1;
during GIMPLE pass: bitintlower0
bitint-3.c:2:6: internal compiler error: verify_gimple failed
0x105897d verify_gimple_in_cfg(function*, bool, bool)
        /home/mjires/git/GCC/master/gcc/tree-cfg.cc:5662
0xee8ad4 execute_function_todo
        /home/mjires/git/GCC/master/gcc/passes.cc:2088
0xee902e execute_todo
        /home/mjires/git/GCC/master/gcc/passes.cc:2142
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.


$ gcc -v
Using built-in specs.
COLLECT_GCC=3Dgcc
COLLECT_LTO_WRAPPER=3D/home/mjires/built/master/libexec/gcc/x86_64-pc-linux=
-gnu/14.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /home/mjires/git/GCC/master/configure
--prefix=3D/home/mjires/built/master --disable-bootstrap --enable-checking
--enable-languages=3Dc,c++,fortran,lto
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.0 20231127 (experimental) (GCC)=