[Bug sanitizer/69539] New: ICE in expand_UBSAN_NULL, at internal-fn.c:202

["sasha.levin at oracle dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69539

            Bug ID: 69539
           Summary: ICE in expand_UBSAN_NULL, at internal-fn.c:202
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: sanitizer
          Assignee: unassigned at gcc dot gnu.org
          Reporter: sasha.levin at oracle dot com
                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
  Target Milestone: ---

Created attachment 37508
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37508&action=edit
preprocessed source

I'm seeing the following ICE:

include/linux/compiler.h: In function â__read_once_size_nocheckâ:
include/linux/compiler.h:235:44: internal compiler error: in expand_UBSAN_NULL,
at internal-fn.c:202
  __READ_ONCE_SIZE;
                                            ^
0x8352b7 expand_UBSAN_NULL
        ../../gcc/internal-fn.c:202
0x633b87 expand_call_stmt
        ../../gcc/cfgexpand.c:2561
0x633b87 expand_gimple_stmt_1
        ../../gcc/cfgexpand.c:3536
0x633b87 expand_gimple_stmt
        ../../gcc/cfgexpand.c:3702
0x6358d1 expand_gimple_basic_block
        ../../gcc/cfgexpand.c:5708
0x63b906 execute
        ../../gcc/cfgexpand.c:6323

with:

$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/home/sasha/gcc-inst/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../configure --prefix=/home/sasha/gcc-inst/ --with-arch=native
--with-tune=native --enable-languages=c --enable-lto --enable-gold
--enable-stage1-languages=c
Thread model: posix
gcc version 6.0.0 20160127 (experimental) (GCC)

It is possible to reproduce using the attached preprocessed source file and:

gcc -flto -fsanitize=null  -c -o test test.c; gcc -flto test