|
131
|
1 /* PR middle-end/84725 - enable attribute nonstring for all narrow character
|
|
|
2 types
|
|
|
3 Verify that -Wstringop-truncation is issued for uses of arrays and
|
|
|
4 pointers to qualified forms of characters of all three types.
|
|
|
5 { dg-do compile }
|
|
145
|
6 { dg-options "-O2 -Wall -Wstringop-truncation -fno-ipa-icf" } */
|
|
131
|
7
|
|
|
8 #if __cplusplus
|
|
|
9 extern "C"
|
|
|
10 #endif
|
|
|
11 char* strncpy (char*, const char*, __SIZE_TYPE__);
|
|
|
12
|
|
|
13 #define S "1234"
|
|
|
14
|
|
|
15 struct Arrays
|
|
|
16 {
|
|
|
17 char a[4];
|
|
|
18 signed char b[4];
|
|
|
19 unsigned char c[4];
|
|
|
20 };
|
|
|
21
|
|
|
22 void test_arrays (struct Arrays *p, const char *s)
|
|
|
23 {
|
|
145
|
24 /* Expect accesses to all three arrays to trigger the warning,
|
|
|
25 including the trailing one. The size argument is a good
|
|
|
26 enough indication that it is not being used as a "legacy"
|
|
|
27 flexible array member. */
|
|
131
|
28 strncpy (p->a, s, sizeof p->a); /* { dg-warning "\\\[-Wstringop-truncation" } */
|
|
|
29 strncpy ((char*)p->b, s, sizeof p->b); /* { dg-warning "\\\[-Wstringop-truncation" } */
|
|
145
|
30 strncpy ((char*)p->c, s, sizeof p->c); /* { dg-warning "\\\[-Wstringop-truncation" } */
|
|
131
|
31 }
|
|
|
32
|
|
|
33 struct Pointers
|
|
|
34 {
|
|
|
35 char *p;
|
|
|
36 signed char *q;
|
|
|
37 unsigned char *r;
|
|
|
38 };
|
|
|
39
|
|
|
40 void test_pointers (struct Pointers *p)
|
|
|
41 {
|
|
|
42 strncpy (p->p, S, sizeof S - 1); /* { dg-warning "\\\[-Wstringop-truncation" } */
|
|
|
43 strncpy ((char*)p->q, S, sizeof S - 1); /* { dg-warning "\\\[-Wstringop-truncation" } */
|
|
|
44 strncpy ((char*)p->r, S, sizeof S - 1); /* { dg-warning "\\\[-Wstringop-truncation" } */
|
|
|
45 }
|
|
|
46
|
|
|
47 struct ConstArrays
|
|
|
48 {
|
|
|
49 const char a[4];
|
|
|
50 const signed char b[4];
|
|
|
51 const unsigned char c[4];
|
|
|
52 };
|
|
|
53
|
|
|
54 void test_const_arrays (struct ConstArrays *p, const char *s)
|
|
|
55 {
|
|
145
|
56 /* Expect accesses to all three arrays to trigger the warning,
|
|
|
57 including the trailing one. */
|
|
131
|
58 strncpy ((char*)p->a, s, sizeof p->a); /* { dg-warning "\\\[-Wstringop-truncation" } */
|
|
|
59 strncpy ((char*)p->b, s, sizeof p->b); /* { dg-warning "\\\[-Wstringop-truncation" } */
|
|
145
|
60 strncpy ((char*)p->c, s, sizeof p->c); /* { dg-warning "\\\[-Wstringop-truncation" } */
|
|
131
|
61 }
|
|
|
62
|
|
|
63 struct ConstPointers
|
|
|
64 {
|
|
|
65 const char *p;
|
|
|
66 const signed char *q;
|
|
|
67 const unsigned char *r;
|
|
|
68 };
|
|
|
69
|
|
|
70 void test_const_pointers (struct ConstPointers *p)
|
|
|
71 {
|
|
|
72 strncpy ((char*)p->p, S, sizeof S - 1); /* { dg-warning "\\\[-Wstringop-truncation" } */
|
|
|
73 strncpy ((char*)p->q, S, sizeof S - 1); /* { dg-warning "\\\[-Wstringop-truncation" } */
|
|
|
74 strncpy ((char*)p->r, S, sizeof S - 1); /* { dg-warning "\\\[-Wstringop-truncation" } */
|
|
|
75 }
|
|
|
76
|
|
|
77 struct VolatileArrays
|
|
|
78 {
|
|
|
79 volatile char a[4];
|
|
|
80 volatile signed char b[4];
|
|
|
81 volatile unsigned char c[4];
|
|
|
82 };
|
|
|
83
|
|
|
84 void test_volatile_arrays (struct VolatileArrays *p, const char *s)
|
|
|
85 {
|
|
145
|
86 /* Expect accesses to all three arrays to trigger the warning,
|
|
|
87 including the trailing one. */
|
|
131
|
88 strncpy ((char*)p->a, s, sizeof p->a); /* { dg-warning "\\\[-Wstringop-truncation" } */
|
|
|
89 strncpy ((char*)p->b, s, sizeof p->b); /* { dg-warning "\\\[-Wstringop-truncation" } */
|
|
145
|
90 strncpy ((char*)p->c, s, sizeof p->c); /* { dg-warning "\\\[-Wstringop-truncation" } */
|
|
131
|
91 }
|
|
|
92
|
|
|
93 struct VolatilePointers
|
|
|
94 {
|
|
|
95 volatile char *p;
|
|
|
96 volatile signed char *q;
|
|
|
97 volatile unsigned char *r;
|
|
|
98 };
|
|
|
99
|
|
|
100 void test_volatile_pointers (struct VolatilePointers *p)
|
|
|
101 {
|
|
|
102 strncpy ((char*)p->p, S, sizeof S - 1); /* { dg-warning "\\\[-Wstringop-truncation" } */
|
|
|
103 strncpy ((char*)p->q, S, sizeof S - 1); /* { dg-warning "\\\[-Wstringop-truncation" } */
|
|
|
104 strncpy ((char*)p->r, S, sizeof S - 1); /* { dg-warning "\\\[-Wstringop-truncation" } */
|
|
|
105 }
|
|
|
106
|
|
|
107 struct ConstVolatileArrays
|
|
|
108 {
|
|
|
109 const volatile char a[4];
|
|
|
110 const volatile signed char b[4];
|
|
|
111 const volatile unsigned char c[4];
|
|
|
112 };
|
|
|
113
|
|
|
114 void test_const_volatile_arrays (struct ConstVolatileArrays *p, const char *s)
|
|
|
115 {
|
|
145
|
116 /* Expect accesses to all three arrays to trigger the warning,
|
|
|
117 including the trailing one. */
|
|
131
|
118 strncpy ((char*)p->a, s, sizeof p->a); /* { dg-warning "\\\[-Wstringop-truncation" } */
|
|
|
119 strncpy ((char*)p->b, s, sizeof p->b); /* { dg-warning "\\\[-Wstringop-truncation" } */
|
|
145
|
120 strncpy ((char*)p->c, s, sizeof p->c); /* { dg-warning "\\\[-Wstringop-truncation" } */
|
|
131
|
121 }
|
|
|
122
|
|
|
123 struct ConstVolatilePointers
|
|
|
124 {
|
|
|
125 const volatile char *p;
|
|
|
126 const volatile signed char *q;
|
|
|
127 const volatile unsigned char *r;
|
|
|
128 };
|
|
|
129
|
|
|
130 void test_const_volatile_pointers (struct ConstVolatilePointers *p)
|
|
|
131 {
|
|
|
132 strncpy ((char*)p->p, S, sizeof S - 1); /* { dg-warning "\\\[-Wstringop-truncation" } */
|
|
|
133 strncpy ((char*)p->q, S, sizeof S - 1); /* { dg-warning "\\\[-Wstringop-truncation" } */
|
|
|
134 strncpy ((char*)p->r, S, sizeof S - 1); /* { dg-warning "\\\[-Wstringop-truncation" } */
|
|
|
135 }
|
|
|
136
|
|
|
137 /* { dg-prune-output "-Wdiscarded-qualifiers" } */
|
