[Bug tree-optimization/102273] New: ICE in expand_DEFERRED_INIT, at internal-fn.c:3024 since r12-3433-ga25e0b5e6ac8a77a

[marxin at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102273

            Bug ID: 102273
           Summary: ICE in expand_DEFERRED_INIT, at internal-fn.c:3024
                    since r12-3433-ga25e0b5e6ac8a77a
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
                CC: qing.zhao at oracle dot com
  Target Milestone: ---

The following fails:

$ cat debug.c

void bar();

struct A {
  char d; }
foo() {
  struct A e;
  void baz() { bar(e); }
}

$ gcc debug.c -ftrivial-auto-var-init=zero -c
during RTL pass: expand
debug.c: In function ‘foo’:
debug.c:6:12: internal compiler error: in expand_DEFERRED_INIT, at
internal-fn.c:3024
    6 |   struct A e;
      |            ^
0x1046342 expand_DEFERRED_INIT
        /home/marxin/Programming/gcc/gcc/internal-fn.c:3024
0x104cfd8 expand_internal_call(internal_fn, gcall*)
        /home/marxin/Programming/gcc/gcc/internal-fn.c:4193
0x104d007 expand_internal_call(gcall*)
        /home/marxin/Programming/gcc/gcc/internal-fn.c:4201
0xcc2fa6 expand_call_stmt
        /home/marxin/Programming/gcc/gcc/cfgexpand.c:2749
0xcc7434 expand_gimple_stmt_1
        /home/marxin/Programming/gcc/gcc/cfgexpand.c:3876
0xcc7b3c expand_gimple_stmt
        /home/marxin/Programming/gcc/gcc/cfgexpand.c:4040
0xcd052d expand_gimple_basic_block
        /home/marxin/Programming/gcc/gcc/cfgexpand.c:6082
0xcd2dcd execute
        /home/marxin/Programming/gcc/gcc/cfgexpand.c:6808
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