// { dg-do compile } // { dg-options "-O2" } void baz (int *, int *); #define MEMCPY(d,s,l) __builtin___memcpy_chk (d, s, l, __builtin_object_size (d, 0)) int foo () { int *p = new int; int *q = new int[4]; MEMCPY (p, "abcdefghijklmnopqrstuvwxyz", sizeof (int)); MEMCPY (q, "abcdefghijklmnopqrstuvwxyz", 4 * sizeof (int)); baz (p, q); } int bar () { int *p = new int; int *q = new int[4]; MEMCPY (p, "abcdefghijklmnopqrstuvwxyz", sizeof (int) + 1); // { dg-warning "will always overflow destination buffer" } MEMCPY (q, "abcdefghijklmnopqrstuvwxyz", 4 * sizeof (int) + 1); // { dg-warning "will always overflow destination buffer" } baz (p, q); }