[Bug c/122877] New: ICE in estimate_move_cost when compiling with OpenMP

[leo.p.singer at nasa dot gov via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122877

            Bug ID: 122877
           Summary: ICE in estimate_move_cost when compiling with OpenMP
           Product: gcc
           Version: 15.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: leo.p.singer at nasa dot gov
  Target Milestone: ---

Created attachment 62921
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=62921&action=edit
Minimal reproducer source code

I am experiencing an internal compiler error when compiling the following code
on macOS with OpenMP turned on:

// test.c
void crash_compiler(const int *dimensions)
{
    const int n = dimensions[0];
        const int m = dimensions[1];

    #pragma omp parallel
    {
        const float data[m];
    }
}

Here is the command that I ran and the output:

$ gcc -fopenmp -c test.c 
during GIMPLE pass: local-fnsummary
test.c: In function 'crash_compiler':
test.c:11:1: internal compiler error: in estimate_move_cost, at
tree-inline.cc:4249
   11 | }
      | ^
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
See <https://trac.macports.org/newticket> for instructions.

I have tried this with multiple versions of GCC from MacPorts and Homebrew, and
I get the same error message across both builds and many different versions of
GCC.

I am attaching the output of `gcc -v -save-temps -fopenmp -c test.c`.