[PR tree-optimization/105820] Add test.

	PR tree-optimization/105820

gcc/testsuite/ChangeLog:

	* g++.dg/tree-ssa/pr105820.c: New test.

1 files changed, 26 insertions, 0 deletions

diff --git a/gcc/testsuite/g++.dg/tree-ssa/pr105820.c b/gcc/testsuite/g++.dg/tree-ssa/pr105820.c
new file mode 100644
index 0000000..507950f
--- /dev/null
+++ b/gcc/testsuite/g++.dg/tree-ssa/pr105820.c
@@ -0,0 +1,26 @@
+// { dg-do compile }
+// { dg-options "-O2 -fstrict-enums --param case-values-threshold=1"}
+
+typedef int basic_block;
+
+enum gimple_code {};
+
+struct omp_region {
+  omp_region *outer;
+  basic_block cont;
+};
+
+void
+oof (void);
+
+void
+build_omp_regions_1 (omp_region *parent, basic_block bb, gimple_code code)
+{
+  if (code == 2)
+    parent = parent->outer;
+  else if (code != 0)
+    parent->cont = bb;
+
+  if (parent)
+    oof ();
+}