https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106981
Bug ID: 106981
Summary: [OpenMP] ICE in decompose, at wide-int.h:984 with
'#pragma acc atomic capture'
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code, openacc
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: burnus at gcc dot gnu.org
CC: tschwinge at gcc dot gnu.org, vries at gcc dot gnu.org
Target Milestone: ---
This is reduced from an OpenACC testsuite.
I am not quite sure whether it is valid or not; I now bluntly claim:
ice-on-valid-code for C
rejects-valid for C++
however, it might well be also an ICE on invalid, I have not checked ...
In any case:
With g++, it fails with:
input5.i:6:44: error: invalid form of ‘#pragma omp atomic’ before ‘(’ token
6 | c[x] = totals[x%((int)(n/10 + 1))] = (a[x] + b[x]) +
totals[x%((int) n/10 + 1)];
But with the C compiler, it has an ICE, unless 'long long n' has been changed
to 'int':
long long n = 100;
void test1(int x, double *a, double *b, double *c, double *totals)
{
#pragma acc atomic capture
c[x] = totals[x%((int)(n/10 + 1))] = (a[x] + b[x]) + totals[x%((int) n/10
+ 1)];
}
The ICE is:
--------------------------
input5.i:6:7: internal compiler error: in decompose, at wide-int.h:984
6 | c[x] = totals[x%((int)(n/10 + 1))] = (a[x] + b[x]) +
totals[x%((int) n/10 + 1)];
| ^
0x67f840 wi::int_traits<generic_wide_int<wide_int_ref_storage<false, false> >
>::decompose(long*, unsigned int, generic_wide_int<wide_int_ref_storage<false,
false> > const&)
../../repos/gcc/gcc/wide-int.h:984
