1 files changed, 95 insertions, 0 deletions
diff --git a/gcc/testsuite/jit.dg/test-error-dereference-field-of-non-pointer.c b/gcc/testsuite/jit.dg/test-error-dereference-field-of-non-pointer.c
new file mode 100644
index 000000000000..75171d722186
--- /dev/null
+++ b/gcc/testsuite/jit.dg/test-error-dereference-field-of-non-pointer.c
@@ -0,0 +1,95 @@
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "libgccjit.h"
+
+#include "harness.h"
+
+struct foo
+{
+  int x;
+  int y;
+};
+
+void
+create_code (gcc_jit_context *ctxt, void *user_data)
+{
+  /* Let's try to inject the equivalent of:
+     void
+     test_bogus_dereference ()
+     {
+        struct foo tmp;
+        tmp->x = tmp->y;
+     }
+     i.e. where tmp is *not* a pointer.
+  */
+  gcc_jit_type *void_type =
+    gcc_jit_context_get_type (ctxt, GCC_JIT_TYPE_VOID);
+  gcc_jit_type *int_type =
+    gcc_jit_context_get_type (ctxt, GCC_JIT_TYPE_INT);
+
+  /* Map "struct foo".  */
+  gcc_jit_field *x =
+    gcc_jit_context_new_field (ctxt,
+                               NULL,
+                               int_type,
+                               "x");
+  gcc_jit_field *y =
+    gcc_jit_context_new_field (ctxt,
+                               NULL,
+                               int_type,
+                               "y");
+  gcc_jit_field *foo_fields[] = {x, y};
+  gcc_jit_struct *struct_foo =
+    gcc_jit_context_new_struct_type (ctxt, NULL, "foo", 2, foo_fields);
+
+  /* Build the test function.  */
+  gcc_jit_function *test_fn =
+    gcc_jit_context_new_function (ctxt, NULL,
+                                  GCC_JIT_FUNCTION_EXPORTED,
+                                  void_type,
+                                  "test_bogus_dereference",
+                                  0, NULL,
+                                  0);
+  gcc_jit_lvalue *tmp =
+    gcc_jit_function_new_local (test_fn, NULL,
+				gcc_jit_struct_as_type (struct_foo),
+				"tmp");
+
+  gcc_jit_block *block = gcc_jit_function_new_block (test_fn, NULL);
+
+  /* Erroneous: tmp->x = ... */
+  gcc_jit_lvalue *lvalue =
+    gcc_jit_rvalue_dereference_field (
+      gcc_jit_lvalue_as_rvalue (tmp),
+      NULL,
+      x);
+
+  /* Erroneous: ... = tmp->y; */
+  gcc_jit_rvalue *rvalue =
+    gcc_jit_lvalue_as_rvalue (
+      gcc_jit_rvalue_dereference_field (
+	gcc_jit_lvalue_as_rvalue (tmp),
+	NULL,
+	y));
+
+  gcc_jit_block_add_assignment (
+    block,
+    NULL,
+    lvalue, rvalue);
+
+  gcc_jit_block_end_with_void_return (block, NULL);
+}
+
+void
+verify_code (gcc_jit_context *ctxt, gcc_jit_result *result)
+{
+  CHECK_VALUE (result, NULL);
+
+  /* Verify that the correct error message was emitted.  */
+  CHECK_STRING_VALUE (gcc_jit_context_get_first_error (ctxt),
+		      ("gcc_jit_rvalue_dereference_field:"
+		       " dereference of non-pointer tmp (type: struct foo)"
+		       " when accessing ->x"));
+}
+