--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/ipa/pr85734.c	Thu Oct 25 07:37:49 2018 +0900
@@ -0,0 +1,19 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -Wsuggest-attribute=malloc -fdelete-null-pointer-checks" } */
+
+__attribute__((noinline))
+static void *f1(__SIZE_TYPE__ sz) /* { dg-bogus "function might be candidate for attribute 'malloc'" } */
+{
+  return __builtin_malloc (sz);
+}
+
+__attribute__((noinline))
+static void *f2(__SIZE_TYPE__ sz) /* { dg-bogus "function might be candidate for attribute 'malloc'" } */
+{
+  return f1 (sz);
+}
+
+void *f3(__SIZE_TYPE__ sz) /* { dg-warning "function might be candidate for attribute 'malloc'" } */
+{
+  return f2(sz);
+}