--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/Walloc-size-larger-than-12.c	Thu Oct 25 07:37:49 2018 +0900
@@ -0,0 +1,27 @@
+/* PR middle-end/82063 - issues with arguments enabled by -Wall
+   { dg-do compile { target lp64 } }
+   { dg-options "-O -Walloc-size-larger-than=1EiB -ftrack-macro-expansion=0" } */
+
+typedef __SIZE_TYPE__ size_t;
+
+void sink (void*);
+
+#define T(x) sink (x)
+
+void f (void)
+{
+  size_t n = 0;
+  T (__builtin_malloc (n));
+
+  n = (size_t)1024 * 1024 * 1024 * 1024 * 1024 * 1024;   /* 1 exbibyte (EiB) */
+  T (__builtin_malloc (n));
+
+  n += 1;
+  T (__builtin_malloc (n));   /* { dg-warning "argument 1 value .1152921504606846977. exceeds maximum object size 1152921504606846976" } */
+
+  n = __PTRDIFF_MAX__;
+  T (__builtin_malloc (n));   /* { dg-warning "exceeds maximum object size" } */
+
+  n = __SIZE_MAX__;
+  T (__builtin_malloc (n));   /* { dg-warning "exceeds maximum object size" } */
+}