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openmp: Avoid calling operand_equal_p on OMP_CLAUSEs [PR103704]

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On OMP_CLAUSEs we reuse TREE_TYPE as CP_OMP_CLAUSE_INFO in the C++ FE.
This confuses the hashing code that operand_equal_p does when checking.
There is really no reason to compare OMP_CLAUSEs against expressions
like captured this, they will never compare equal.

2021-12-15  Jakub Jelinek  <jakub@redhat.com>

	PR c++/103704
	* semantics.c (finish_omp_target_clauses_r): For OMP_CLAUSEs
	just walk subtrees.

	* g++.dg/gomp/pr103704.C: New test.
This commit is contained in:
Jakub Jelinek 2021-12-15 10:27:08 +01:00
parent a5b4ebc217
commit c0e34451ae
2 changed files with 22 additions and 0 deletions
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3
gcc/cp/semantics.c
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@ -9325,6 +9325,9 @@ finish_omp_target_clauses_r (tree *tp, int *walk_subtrees, void *ptr)
return NULL_TREE;
}
if (TREE_CODE (t) == OMP_CLAUSE)
return NULL_TREE;
if (current_object)
{
tree this_expr = TREE_OPERAND (current_object, 0);

19
gcc/testsuite/g++.dg/gomp/pr103704.C Normal file
View file

@ -0,0 +1,19 @@
// PR c++/103704
// { dg-do compile }
struct S { int a; };
template <typename T>
struct U : public T {
T a;
U ()
{
#pragma omp target
#pragma omp teams
#pragma omp distribute private(a)
for (int k = 0; k < 1; ++k)
;
}
};
struct V : public U<S> { V () : U<S> () {} };