[Bug target/113043] New: ICE: in emit_move_insn, at expr.cc:4246

[iamanonymous.cs at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113043

            Bug ID: 113043
           Summary: ICE: in emit_move_insn, at expr.cc:4246
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: iamanonymous.cs at gmail dot com
  Target Milestone: ---

Compiler Explorer: https://godbolt.org/z/erY5Mrrso

*******************************************************************************
OS and Platform:
$ uname -a:
Linux ubuntu 4.15.0-213-generic #224-Ubuntu SMP Mon Jun 19 13:30:12 UTC 2023
x86_64 x86_64 x86_64 GNU/Linux
*******************************************************************************
gcc version:
$ gcc -v
Using built-in specs.
COLLECT_GCC=/root/gcc_set/202311291030/bin/gcc
COLLECT_LTO_WRAPPER=/root/gcc_set/202311291030/libexec/gcc/x86_64-pc-linux-gnu/14.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc/configure --prefix=/root/gcc_set/202311291030
--with-gmp=/root/build_essential --with-mpfr=/root/build_essential
--with-mpc=/root/build_essential --enable-languages=c,c++ --disable-multilib
--with-sanitizer=address,undefined,thread,leak
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 14.0.0 20231129 (experimental) (GCC) 

git version: 99fa0bfd63d97825c4221dcd3123940f1d0e6291
*******************************************************************************
Program:
$ cat mutant.c
struct a {
  long b
};
__attribute__((interrupt)) void c(struct a *d) { 1 != d->b; }

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Command Lines:
$ gcc -mx32 -mgeneral-regs-only -maddress-mode=long -fsanitize=undefined
mutant.c
mutant.c:3:1: warning: no semicolon at end of struct or union
    3 | };
      | ^
during RTL pass: expand
mutant.c: In function ‘c’:
mutant.c:4:56: internal compiler error: in emit_move_insn, at expr.cc:4246
    4 | __attribute__((interrupt)) void c(struct a *d) { 1 != d->b; }
      |                                                       ~^~~
0x774d50 emit_move_insn(rtx_def*, rtx_def*)
        ../../gcc/gcc/expr.cc:4246
0xaddfec expand_gimple_stmt_1
        ../../gcc/gcc/cfgexpand.cc:4011
0xaddfec expand_gimple_stmt
        ../../gcc/gcc/cfgexpand.cc:4045
0xadec97 expand_gimple_basic_block
        ../../gcc/gcc/cfgexpand.cc:6101
0xae08f6 execute
        ../../gcc/gcc/cfgexpand.cc:6836
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.