[Bug c/126718] New: ICE in get_expr_operands, at tree-ssa-operands.cc:943 with __builtin_putchar ((1 ? (48) : (48)))

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126718

            Bug ID: 126718
           Summary: ICE in get_expr_operands, at tree-ssa-operands.cc:943
                    with __builtin_putchar ((1 ? (48) : (48)))
           Product: gcc
           Version: 16.1.0
            Status: UNCONFIRMED
          Keywords: ice-checking, ice-on-invalid-code
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: stuzyf at 163 dot com
  Target Milestone: ---

Reproducer:

https://godbolt.org/z/bEaWrfnPh
```
int __GIMPLE (ssa,startwith("pre"))
main ()
{
  __BB(4):
 __builtin_putchar ((1 ? (48) : (48)));
}

```

Backtrace:
```
<source>:1:5: error: '__GIMPLE' only valid with '-fgimple'
    1 | int __GIMPLE (ssa,startwith("pre"))
      |     ^~~~~~~~
<source>: In function 'main':
<source>:5:22: error: expected expression before '(' token
    5 |   __builtin_putchar ((1 ? (48) : (48)));
      |                      ^
unhandled expression in get_expr_operands():
 <error_mark 0x7c1e3d802f48>

<source>:6:1: internal compiler error: in get_expr_operands, at
tree-ssa-operands.cc:943
    6 | }
      | ^
0x2d39368 diagnostics::context::diagnostic_impl(rich_location*,
diagnostics::metadata const*, diagnostics::option_id, char const*,
__va_list_tag (*) [1], diagnostics::kind)
        ???:0
0x2d2dfab internal_error(char const*, ...)
        ???:0
0xe97068 fancy_abort(char const*, int, char const*)
        ???:0
0x1895c1d operands_scanner::get_expr_operands(tree_node**, int)
        ???:0
0x18961a0 operands_scanner::parse_ssa_operands()
        ???:0
0x18970bf operands_scanner::build_ssa_operands()
        ???:0
0x18971e4 update_stmt_operands(function*, gimple*)
        ???:0
0xf73e87 c_parser_parse_gimple_body(c_parser*, char*, c_declspec_il,
profile_count)
        ???:0
0xf6a690 c_parse_file()
        ???:0
0xfee4c9 c_common_parse_file()
        ???:0
/cefs/38/383ad2f84cbd57a52fd68bbe_consolidated/compilers_c++_x86_gcc_assertions-16.1.0/bin/../libexec/gcc/x86_64-linux-gnu/16.1.0/cc1
-quiet -imultiarch x86_64-linux-gnu -iprefix
/cefs/38/383ad2f84cbd57a52fd68bbe_consolidated/compilers_c++_x86_gcc_assertions-16.1.0/bin/../lib/gcc/x86_64-linux-gnu/16.1.0/
<source> -quiet -dumpdir /app/ -dumpbase output.c -dumpbase-ext .c -masm=intel
-mtune=generic -march=x86-64 -g -fdiagnostics-color=always -fno-verbose-asm -o
/app/output.s
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.
Compiler returned: 1

```
Reproduced with:
gcc 10.4.0, x86_64, assertions enabled (earliest version reproduced)
gcc 16.1.0, x86_64, assertions enabled (version where it was discovered)