1 files changed, 65 insertions, 0 deletions
diff --git a/offload/test/mapping/declare_mapper_nested_mappers.cpp b/offload/test/mapping/declare_mapper_nested_mappers.cpp
new file mode 100644
index 000000000000..a9e3f05e0f5f
--- /dev/null
+++ b/offload/test/mapping/declare_mapper_nested_mappers.cpp
@@ -0,0 +1,65 @@
+// RUN: %libomptarget-compilexx-run-and-check-generic
+
+#include <cstdio>
+#include <cstdlib>
+
+typedef struct {
+  int a;
+  double *b;
+} C;
+#pragma omp declare mapper(id1 : C s) map(to : s.a) map(from : s.b[0 : 2])
+
+typedef struct {
+  int e;
+  C f;
+  int h;
+  short *g;
+} D;
+#pragma omp declare mapper(default : D r) map(from : r.e)                      \
+    map(mapper(id1), tofrom : r.f) map(tofrom : r.g[0 : r.h])
+
+int main() {
+  constexpr int N = 10;
+  D s;
+  s.e = 111;
+  s.f.a = 222;
+  double x[2];
+  x[1] = 20;
+  short y[N];
+  y[1] = 30;
+  s.f.b = &x[0];
+  s.g = &y[0];
+  s.h = N;
+
+  D *sp = &s;
+  D **spp = &sp;
+
+  printf("%d %d %4.5f %d %d %d\n", spp[0][0].e, spp[0][0].f.a, spp[0][0].f.b[1],
+         spp[0][0].f.b == &x[0] ? 1 : 0, spp[0][0].g[1],
+         spp[0][0].g == &y[0] ? 1 : 0);
+  // CHECK: 111 222 20.00000 1 30 1
+
+  int spp00fa = -1, spp00fb_r = -1, spp00fg1 = -1, spp00fg_r = -1;
+  __intptr_t p = reinterpret_cast<__intptr_t>(&x[0]),
+             p1 = reinterpret_cast<__intptr_t>(&y[0]);
+#pragma omp target map(tofrom : spp[0][0]) firstprivate(p, p1)                  \
+                   map(from: spp00fa, spp00fb_r, spp00fg1, spp00fg_r)
+  {
+    spp00fa = spp[0][0].f.a;
+    spp00fb_r = spp[0][0].f.b == reinterpret_cast<void *>(p) ? 1 : 0;
+    spp00fg1 = spp[0][0].g[1];
+    spp00fg_r = spp[0][0].g == reinterpret_cast<void *>(p1) ? 1 : 0;
+    printf("%d %d %d %d\n", spp00fa, spp00fb_r, spp00fg1, spp00fg_r);
+    // XCHECK: 222 0 30 0
+    spp[0][0].e = 333;
+    spp[0][0].f.a = 444;
+    spp[0][0].f.b[1] = 40;
+    spp[0][0].g[1] = 50;
+  }
+    printf("%d %d %d %d\n", spp00fa, spp00fb_r, spp00fg1, spp00fg_r);
+  // CHECK: 222 0 30 0
+  printf("%d %d %4.5f %d %d %d\n", spp[0][0].e, spp[0][0].f.a, spp[0][0].f.b[1],
+         spp[0][0].f.b == &x[0] ? 1 : 0, spp[0][0].g[1],
+         spp[0][0].g == &y[0] ? 1 : 0);
+  // CHECK: 333 222 40.00000 1 50 1
+}