1 /* PR tree-optimization/79352 - -fprintf-return-value doesn't handle
2 flexible-like array members properly
3 { dg-do compile }
4 { dg-options "-O2 -fdump-tree-optimized" } */
5
6 struct A { int i; char a1[1]; };
7 struct B { int i; char a3[3]; };
8 struct C { int i; char ax[]; };
9
test_array_1(int i,struct A * a)10 int test_array_1 (int i, struct A *a)
11 {
12 return __builtin_snprintf (0, 0, "%-s", a->a1);
13 }
14
test_array_3(int i,struct B * b)15 int test_array_3 (int i, struct B *b)
16 {
17 return __builtin_snprintf (0, 0, "%-s", b->a3);
18 }
19
test_array_1_3(int i,struct A * a,struct B * b)20 int test_array_1_3 (int i, struct A *a, struct B *b)
21 {
22 return __builtin_snprintf (0, 0, "%-s", i ? a->a1 : b->a3);
23 }
24
test_string_and_array_3(int i,struct B * b)25 int test_string_and_array_3 (int i, struct B *b)
26 {
27 return __builtin_snprintf (0, 0, "%-s", i ? "123" : b->a3);
28 }
29
test_flexarray(struct C * c)30 int test_flexarray (struct C *c)
31 {
32 return __builtin_snprintf (0, 0, "%-s", c->ax);
33 }
34
test_array_and_flexarray(int i,struct B * b,struct C * c)35 int test_array_and_flexarray (int i, struct B *b, struct C *c)
36 {
37 return __builtin_snprintf (0, 0, "%-s", i ? b->a3 : c->ax);
38 }
39
test_string_and_flexarray(int i,struct C * c)40 int test_string_and_flexarray (int i, struct C *c)
41 {
42 return __builtin_snprintf (0, 0, "%-s", i ? "123" : c->ax);
43 }
44
45 /* { dg-final { scan-tree-dump-times "snprintf" 7 "optimized"} } */
46