[Bug middle-end/108545] [13 Regression] ICE in install_var_field, at omp-low.cc:799 since r13-2665-g23baa717c991d77f

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108545

--- Comment #3 from Tobias Burnus <burnus at gcc dot gnu.org> ---
Fortran: Same issue (ICE) also with:
   !$omp target enter data map(to: x)

Crucial is the VOLATILE attribute.

 * * *

The following C code already gives an ICE with GCC 12, it works with GCC 11.
(Either of the two lines fail. I think that's invalid OpenMP code, but
I do not have a real overview about 'map' - and I fear no one has.)


volatile struct t {
  struct t2 { int *a; int c; } u;
  int b;
} my_struct;
volatile struct t3 { int *a; int c; } my_struct3;

void f() {
  #pragma omp target enter data map(to:my_struct.u) map(to:my_struct.u.a)
  #pragma omp target enter data map(to:my_struct3) map(to:my_struct3.a)
}