craycc: compiler crash on a recursive function called in a target region

// # Draft finding: omp52-c-w-recursive-routine on cce19
//
// - compiler: cce19
// - toolchain: cce19; arch: gfx942; machine: tuolumne; memory mode: unified; opt: -O2
// - program: catalog omp52-c-w-recursive-routine (c, version 52, sha256 5032bc0dcb16068b)
// - expected: None (None; )
// - actual: ice  (ice: clang: error: clang frontend command failed due to signal (use -v to see invocation))
// - verdict: compiler_bug by rule R10-compile-ice: an internal compiler error (or the compiler rejecting code it generated) on a legal program: always the compiler's defect
// - reason: 
// - citations: RUL-COMPILE-TIME (rulings.md)
// - legality: legal: offload.engine.prerun.check accepts it (rerun: offload.engine.rules with the
//   race rule and the restriction checks, and the AFAR clang front end, not under test here); no
//   compiler under test, gfortran or gcc is a legality witness
// - witnesses: none
// - withdrawn: none
//
// Generated by compliance.widen (OpenMP 5.2, C11; catalog widening). Do not edit.
// id: omp52-c-w-recursive-routine
// primary atom: base.device.recursion
// atoms: base.device.recursion
// legal: yes
// observable: yes
// ran_on_host: inside the target region of interest
// evidence: construct
// needs: none
// std: c11
// feature: a recursive declare target function
// spec: OpenMP 5.2 §1.7, p.35: C11 is a normative base language
#include <stdio.h>
#include <stdbool.h>
#include <omp.h>

enum { n = 64 };

#pragma omp declare target
int sumto(int k) { return k <= 0 ? 0 : k + sumto(k - 1); }
#pragma omp end declare target

int main(void) {
  int a[n], b[n], ref[n];
  int host_flag = 1;
  for (int i = 0; i < n; i++) {
    a[i] = i + 1;
    b[i] = 0;
    ref[i] = ((i + 1) % 8) * ((i + 1) % 8 + 1) / 2;
  }
  #pragma omp target teams distribute parallel for map(to: a) map(from: b) map(tofrom: \
      host_flag)
  for (int i = 0; i < n; i++) {
    b[i] = sumto(a[i] % 8);
    if (i == 0) host_flag = omp_is_initial_device();
  }
  bool ok = true;
  for (int i = 0; i < n; i++)
    ok = ok && (b[i] == ref[i]);
  printf("RESULT ran_on_host=%d check=%s\n", host_flag, ok ? "pass" : "fail");
  return 0;
}