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comparison gcc/testsuite/gcc.dg/Wstringop-overflow-32.c @ 152:2b5abeee2509

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update gcc11
author anatofuz
date Mon, 25 May 2020 07:50:57 +0900
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145:1830386684a0 152:2b5abeee2509
1 /* PR middle-end/93829 - bogus -Wstringop-overflow on memcpy of a struct
2 with a pointer member from another with a long string
3 { dg-do compile }
4 { dg-options "-O2 -Wall" } */
5
6 extern void* memcpy (void*, const void*, __SIZE_TYPE__);
7
8 #define S40 "0123456789012345678901234567890123456789"
9
10 const char s40[] = S40;
11
12 struct S
13 {
14 const void *p, *q, *r;
15 } s, sa[2];
16
17
18 void test_lit_decl (void)
19 {
20 struct S t = { 0, S40, 0 };
21
22 memcpy (&s, &t, sizeof t); // { dg-bogus "-Wstringop-overflow" }
23 }
24
25 void test_str_decl (void)
26 {
27 struct S t = { 0, s40, 0 };
28
29 memcpy (&s, &t, sizeof t); // { dg-bogus "-Wstringop-overflow" }
30 }
31
32
33 void test_lit_ssa (int i)
34 {
35 if (i < 1)
36 i = 1;
37 struct S *p = &sa[i];
38 struct S t = { 0, S40, 0 };
39
40 memcpy (p, &t, sizeof t); // { dg-bogus "-Wstringop-overflow" }
41 }
42
43 void test_str_ssa (int i)
44 {
45 if (i < 1)
46 i = 1;
47 struct S *p = &sa[i];
48 struct S t = { 0, s40, 0 };
49
50 memcpy (p, &t, sizeof t); // { dg-bogus "-Wstringop-overflow" }
51 }