[Bug rtl-optimization/118266] [15 Regression] ICE in maybe_record_trace_start, at dwarf2cfi.cc:2591 by r15-5863-g5ab3f091b3eb42

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118266

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|rguenther at suse dot de           |rguenth at gcc dot 
gnu.org

--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
While I can confirm/reproduce, that we now ICE with wrong CFI is hardly the
fault of the change (and I have no experience with the CFI emitting code).

Cleaned up testcase:

typedef struct {
  int a;
  int b;
  int c;
} mystruct;
int main_j;
int
main()
{
  mystruct *m = (mystruct *)__builtin_malloc (2*sizeof (mystruct)), *mref = m;
#pragma acc enter data copyin(m[1])
  for (int i; i < 9; i++) {
#pragma acc parallel
    for (; main_j;)
      ;
#pragma acc parallel loop copy(mref->b, m->c)
    for (main_j = 0; main_j < 4; main_j++)
      ;
  }
#pragma acc data copyout(m[ : 1])
  __builtin_free(m);
}