https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84992
Bug ID: 84992
Summary: [openacc] function static var in parallel
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: vries at gcc dot gnu.org
Target Milestone: ---
When compiling this openacc testcase:
....
#include <stdio.h>
int
main (void)
{
int n[1];
n[0] = 3;
#pragma acc parallel copy(n)
{
static const int test[] = {1,2,3,4};
n[0] = test[n[0]];
}
printf ("n: %d\n", n[0]);
return 0;
}
...
we run into an ICE:
...
lto1: internal compiler error: in input_varpool_node, at lto-cgraph.c:1424^M
...
We've reported the ICE at PR84592, where we use a slightly more complicated
example.
But the first question here is: is this a valid openacc program?
Given that function static variables are not supported in functions to which a
routine directive applies, are function static variables supported in parallel
regions, or not?
If not, we should emit a proper error message.
If so, we should implement the required semantics.
