[gcc/devel/omp/gcc-12] openmp: Fix handling of target constructs in static member functions [PR106829]

[gcc/devel/omp/gcc-12] openmp: Fix handling of target constructs in static member functions [PR106829]

[Andrew Stubbs]

https://gcc.gnu.org/g:82bfbdca15292ca2ca614c7ec16b8fe10124ddd4

commit 82bfbdca15292ca2ca614c7ec16b8fe10124ddd4
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Wed Sep 7 08:54:13 2022 +0200

    openmp: Fix handling of target constructs in static member functions [PR106829]
    
    Just calling current_nonlambda_class_type in static member functions returns
    non-NULL, but something that isn't *this and if unlucky can match part of the
    IL and can be added to target clauses.
          if (DECL_NONSTATIC_MEMBER_P (decl)
              && current_class_ptr)
    is a guard used elsewhere (in check_accessibility_of_qualified_id).
    
    2022-09-07  Jakub Jelinek  <jakub@redhat.com>
    
            PR c++/106829
            * semantics.cc (finish_omp_target_clauses): If current_function_decl
            isn't a nonstatic member function, don't set data.current_object to
            non-NULL.
    
            * g++.dg/gomp/pr106829.C: New test.
    
    (cherry picked from commit e90af965e5c858ba02c0cdfbac35d0a19da1c2f6)

Diff:
---
 gcc/cp/ChangeLog.omp                 | 10 ++++++++++
 gcc/cp/semantics.cc                  | 17 ++++++++---------
 gcc/testsuite/ChangeLog.omp          |  8 ++++++++
 gcc/testsuite/g++.dg/gomp/pr106829.C | 15 +++++++++++++++
 4 files changed, 41 insertions(+), 9 deletions(-)

diff --git a/gcc/cp/ChangeLog.omp b/gcc/cp/ChangeLog.omp
index 35504f4c92b..c3214f31252 100644
--- a/gcc/cp/ChangeLog.omp
+++ b/gcc/cp/ChangeLog.omp
@@ -1,3 +1,13 @@
+2022-09-09  Paul-Antoine Arras  <pa@codesourcery.com>
+
+	Backport from mainline:
+	2022-09-07  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/106829
+	* semantics.cc (finish_omp_target_clauses): If current_function_decl
+	isn't a nonstatic member function, don't set data.current_object to
+	non-NULL.
+
 2022-09-07  Tobias Burnus  <tobias@codesourcery.com>
 
 	Backport from mainline:
diff --git a/gcc/cp/semantics.cc b/gcc/cp/semantics.cc
index 7717a820f0d..dad04dc4757 100644
--- a/gcc/cp/semantics.cc
+++ b/gcc/cp/semantics.cc
@@ -9727,16 +9727,15 @@ finish_omp_target_clauses (location_t loc, tree body, tree *clauses_ptr)
 {
   omp_target_walk_data data;
   data.this_expr_accessed = false;
+  data.current_object = NULL_TREE;
 
-  tree ct = current_nonlambda_class_type ();
-  if (ct)
-    {
-      tree object = maybe_dummy_object (ct, NULL);
-      object = maybe_resolve_dummy (object, true);
-      data.current_object = object;
-    }
-  else
-    data.current_object = NULL_TREE;
+  if (DECL_NONSTATIC_MEMBER_P (current_function_decl) && current_class_ptr)
+    if (tree ct = current_nonlambda_class_type ())
+      {
+	tree object = maybe_dummy_object (ct, NULL);
+	object = maybe_resolve_dummy (object, true);
+	data.current_object = object;
+      }
 
   if (DECL_LAMBDA_FUNCTION_P (current_function_decl))
     {
diff --git a/gcc/testsuite/ChangeLog.omp b/gcc/testsuite/ChangeLog.omp
index 74b36e20c5a..e0c8c138620 100644
--- a/gcc/testsuite/ChangeLog.omp
+++ b/gcc/testsuite/ChangeLog.omp
@@ -1,3 +1,11 @@
+2022-09-09  Paul-Antoine Arras  <pa@codesourcery.com>
+
+	Backport from mainline:
+	2022-09-07  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/106829
+	* g++.dg/gomp/pr106829.C: New test.
+
 2022-09-09  Tobias Burnus  <tobias@codesourcery.com>
 
 	Backport from mainline:
diff --git a/gcc/testsuite/g++.dg/gomp/pr106829.C b/gcc/testsuite/g++.dg/gomp/pr106829.C
new file mode 100644
index 00000000000..0295efb88ee
--- /dev/null
+++ b/gcc/testsuite/g++.dg/gomp/pr106829.C
@@ -0,0 +1,15 @@
+// PR c++/106829
+
+namespace std
+{
+  template <typename> class complex;
+  template <> struct complex<double> { complex (double); _Complex double d; };
+}
+struct S { void static foo (); };
+
+void
+S::foo ()
+{
+#pragma omp target
+  std::complex<double> c = 0.0;
+}