[ICE/unrelated compiler error] Incorrect stream direction causes errors #10
Description
When, mistakenly, the write (<<) operator is used with the input clause it cause an unrelated compiler error or ICE.
Example program:
#pragma omp task input(scenter_ref[id] << center_out[block_size])
{
// ...
}Possible compiler errors:
during GIMPLE pass: omplower
stream_simple.c:70:9: internal compiler error: in fold_convert_loc, at fold-const.c:2430
70 | #pragma omp task input(scenter_ref[id] << center_out[block_size])
| ^~~
0x7e8ef7 fold_convert_loc(unsigned int, tree_node*, tree_node*)
../../gcc/fold-const.c:2429
0x984e70 lower_send_clauses
../../gcc/omp-low.c:6978
0x984e70 lower_omp_taskreg
../../gcc/omp-low.c:10092
0x976306 lower_omp_1
../../gcc/omp-low.c:11511
0x976306 lower_omp
../../gcc/omp-low.c:11601
0x975f1d lower_omp_1
../../gcc/omp-low.c:11445
0x975f1d lower_omp
../../gcc/omp-low.c:11601
0x9766b0 lower_omp_1
../../gcc/omp-low.c:11437
0x9766b0 lower_omp
../../gcc/omp-low.c:11601
0x975f1d lower_omp_1
../../gcc/omp-low.c:11445
0x975f1d lower_omp
../../gcc/omp-low.c:11601
0x975f1d lower_omp_1
../../gcc/omp-low.c:11445
0x975f1d lower_omp
../../gcc/omp-low.c:11601
0x9766b0 lower_omp_1
../../gcc/omp-low.c:11437
0x9766b0 lower_omp
../../gcc/omp-low.c:11601
0x975f1d lower_omp_1
../../gcc/omp-low.c:11445
0x975f1d lower_omp
../../gcc/omp-low.c:11601
0x9766b0 lower_omp_1
../../gcc/omp-low.c:11437
0x9766b0 lower_omp
../../gcc/omp-low.c:11601
0x9766b0 lower_omp_1
../../gcc/omp-low.c:11437
or
stream_simple.c:75:9: error: Sharing clauses that require building a marshalling function are not allowed at this time. (passing ‘right_in’ to task not allowed, try using a pointer to shared data if possible).
75 | #pragma omp task input(sleft_ref[id] >> left_in[1], \
| ^~~
Makefile:7: recipe for target 'stream_simple' failed
The latter happens when there is more than one stream in the clause.
The code is clearly incorrect, but this should result in a related compiler error (and not ICE).