1 /* Verify that our memset warnings don't crash when folding
2 arguments within a template (PR c++/83814). */
4 // { dg-options "-Wno-int-to-pointer-cast -Wmemset-transposed-args -Wmemset-elt-size" }
9 __builtin_memset (int() - char(), 0, 0);
15 __builtin_memset (0, 0, int() - char());
19 void test_3 (unsigned a, int c)
21 __builtin_memset((char *)c + a, 0, a);
25 void test_4 (unsigned a, int c)
27 __builtin_memset(0, 0, (char *)c + a);
30 /* Verify that we warn for -Wmemset-transposed-args inside
38 __builtin_memset (buf, sizeof buf, 0); // { dg-warning "transposed parameters" }
41 /* Adapted from c-c++-common/memset-array.c; verify that
42 -Wmemset-elt-size works within a template. */
58 void foo (struct s *s)
60 __builtin_memset (t1, 0, 20); // { dg-warning "element size" }
62 // This case requires reading through an enum value:
63 __builtin_memset (t2, 0, a_n); // { dg-warning "element size" }
65 __builtin_memset (s->t, 0, 20); // { dg-warning "element size" }
67 // These cases require folding of arg2 within a template:
68 __builtin_memset (t2, 0, a_n + 0); // { dg-warning "element size" }
69 __builtin_memset (t2, 0, a_n * 1); // { dg-warning "element size" }