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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/113092] New: SanitizerTool: CHECK failed:
 ubsan_value.cpp:69 "((getType().isSignedIntegerTy())) != (0)" (0x0, 0x0) with
 _BitInt()
Date: Wed, 20 Dec 2023 12:06:55 +0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: sanitizer
X-Bugzilla-Version: 14.0
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113092

            Bug ID: 113092
           Summary: SanitizerTool: CHECK failed: ubsan_value.cpp:69
                    "((getType().isSignedIntegerTy())) !=3D (0)" (0x0, 0x0)
                    with _BitInt()
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: sanitizer
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zsojka at seznam dot cz
                CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
                    jakub at gcc dot gnu.org, kcc at gcc dot gnu.org, marxi=
n at gcc dot gnu.org
  Target Milestone: ---
              Host: x86_64-pc-linux-gnu
            Target: x86_64-pc-linux-gnu

Created attachment 56909
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D56909&action=3Dedit
reduced testcase

Using UBsan with _BitInt() fails at runtime:
$ x86_64-pc-linux-gnu-gcc -fsanitize=3Dundefined testcase.c
$ ./a.out=20
SanitizerTool: CHECK failed: ubsan_value.cpp:69
"((getType().isSignedIntegerTy())) !=3D (0)" (0x0, 0x0) (tid=3D9442)


$ x86_64-pc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=3D/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-g=
cc
COLLECT_LTO_WRAPPER=3D/repo/gcc-trunk/binary-trunk-r14-6742-20231220113252-=
gbe9e8de6284-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc=
/x86_64-pc-linux-gnu/14.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=3Dc,c++
--enable-valgrind-annotations --disable-nls --enable-checking=3Dyes,rtl,df,=
extra
--disable-bootstrap --with-cloog --with-ppl --with-isl
--build=3Dx86_64-pc-linux-gnu --host=3Dx86_64-pc-linux-gnu
--target=3Dx86_64-pc-linux-gnu --with-ld=3D/usr/bin/x86_64-pc-linux-gnu-ld
--with-as=3D/usr/bin/x86_64-pc-linux-gnu-as --disable-libstdcxx-pch
--prefix=3D/repo/gcc-trunk//binary-trunk-r14-6742-20231220113252-gbe9e8de62=
84-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.0 20231220 (experimental) (GCC)=