1 files changed, 28 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr15749-1.h b/gcc/testsuite/gcc.dg/pr15749-1.h
new file mode 100644
index 000000000..db4a259fe
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr15749-1.h
@@ -0,0 +1,28 @@
+/* Similar to c99-flex-array-3.c, but a system header so should not
+   have diagnostics even with -pedantic-errors.  */
+
+#pragma GCC system_header
+
+struct flex { int a; int b[]; };
+union rf1 { struct flex a; int b; };
+union rf2 { int a; struct flex b; };
+union rf3 { int a; union rf1 b; };
+union rf4 { union rf2 a; int b; };
+
+struct t0 { struct flex a; };
+struct t1 { union rf1 a; };
+struct t2 { union rf2 a; };
+struct t3 { union rf3 a; };
+struct t4 { union rf4 a; };
+
+void f0 (struct flex[]);
+void f1 (union rf1[]);
+void f2 (union rf2[]);
+void f3 (union rf3[]);
+void f4 (union rf4[]);
+
+struct flex a0[1];
+union rf1 a1[1];
+union rf2 a2[1];
+union rf3 a3[1];
+union rf4 a4[1];