1 files changed, 25 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/compile/pr42164.c b/gcc/testsuite/gcc.c-torture/compile/pr42164.c
new file mode 100644
index 000000000..7b94aefe7
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/compile/pr42164.c
@@ -0,0 +1,25 @@
+typedef struct
+{
+  unsigned long long pte;
+} pte_t;
+pte_t mk_swap_pte (unsigned long offset)
+{
+  pte_t pte;
+  pte.pte = (offset << 40);
+  return pte;
+}
+int pte_file (pte_t pte)
+{
+  return pte.pte & (1 << 4);
+}
+typedef struct
+{
+  unsigned long val;
+} swp_entry_t;
+pte_t swp_entry_to_pte (swp_entry_t entry)
+{
+  swp_entry_t arch_entry;
+  arch_entry = (swp_entry_t){mk_swap_pte (swp_offset (entry)).pte};
+  __BUG_ON ((unsigned long) pte_file ((pte_t) {arch_entry.val}));
+  return (pte_t) {arch_entry.val};
+}