1 /* PR middle-end/85359 - duplicate -Wstringop-overflow for a strcmp call
2 with a nonstring pointer
3 { dg-do compile }
4 { dg-options "-O2 -Wall" } */
5
6 typedef __SIZE_TYPE__ size_t;
7 typedef __builtin_va_list va_list;
8
9 int printf (const char*, ...);
10 int puts (const char*);
11 int puts_unlocked (const char*);
12 int sprintf (char*, const char*, ...);
13 int snprintf (char*, size_t, const char*, ...);
14 int vsprintf (char*, const char*, va_list);
15 int vsnprintf (char*, size_t, const char*, va_list);
16
17 int strcmp (const char*, const char*);
18 int strncmp (const char*, const char*, size_t);
19
20 char* stpcpy (char*, const char*);
21 char* stpncpy (char*, const char*, size_t);
22
23 char* strcat (char*, const char*);
24 char* strncat (char*, const char*, size_t);
25
26 char* strcpy (char*, const char*);
27 char* strncpy (char*, const char*, size_t);
28
29 char* strchr (const char*, int);
30 char* strrchr (const char*, int);
31 char* strstr (const char*, const char*);
32 char* strdup (const char*);
33 size_t strlen (const char*);
34 size_t strnlen (const char*, size_t);
35 char* strndup (const char*, size_t);
36
37 #define NONSTRING __attribute__ ((nonstring))
38
39 extern char ns5[5] NONSTRING;
40
41 int strcmp_nonstring_1 (NONSTRING const char *a, const char *b)
42 {
43 /* dg-warning matches one or more instances of the warning so it's
44 no good on its own. Use dg-regexp instead to verify that just
45 one instance of the warning is issued. See gcc.dg/pr64223-1
46 for a different approach. */
47 return strcmp (a, b); /* { dg-regexp "\[^\n\r\]+: warning: .strcmp. argument 1 declared attribute .nonstring. \\\[-Wstringop-overread\[^\n\r\]*" "strcmp" } */
48 }
49
50 int strcmp_nonstring_2 (const char *a, NONSTRING const char *b)
51 {
52 return strcmp (a, b); /* { dg-regexp "\[^\n\r\]+: warning: .strcmp. argument 2 declared attribute .nonstring. \\\[-Wstringop-overread\[^\n\r\]*" "strcmp" } */
53 }
54
55 int strncmp_nonstring_1 (const char *s)
56 {
57 return strncmp (s, ns5, sizeof ns5 + 1); /* { dg-regexp "\[^\n\r\]+: warning: .strncmp. argument 2 declared attribute .nonstring. \[^\n\r\]+ \\\[-Wstringop-overread\[^\n\r\]*" "strncmp" } */
58 }
59
60 int strncmp_nonstring_2 (const char *s)
61 {
62 return strncmp (ns5, s, sizeof ns5 + 1); /* { dg-regexp "\[^\n\r\]+: warning: .strncmp. argument 1 declared attribute .nonstring. \[^\n\r\]+ \\\[-Wstringop-overread\[^\n\r\]*" "strncmp" } */
63 }
64
65 char* stpcpy_nonstring (char *d, NONSTRING const char *s)
66 {
67 return stpcpy (d, s); /* { dg-regexp "\[^\n\r\]+: warning: .stpcpy. argument 2 declared attribute .nonstring. \\\[-Wstringop-overread\[^\n\r\]*" "stpcpy" } */
68 }
69
70 char* stpncpy_nonstring (char *d)
71 {
72 return stpncpy (d, ns5, sizeof ns5 + 1); /* { dg-regexp "\[^\n\r\]+: warning: .stpncpy. argument 2 declared attribute .nonstring. \[^\n\r\]+ \\\[-Wstringop-overread\[^\n\r\]*" "stpncpy" } */
73 }
74
75 char* strchr_nonstring (NONSTRING const char *s, int c)
76 {
77 return strchr (s, c); /* { dg-regexp "\[^\n\r\]+: warning: .strchr. argument 1 declared attribute .nonstring. \\\[-Wstringop-overread\[^\n\r\]*" "strchr" } */
78 }
79
80 char* strrchr_nonstring (NONSTRING const char *s, int c)
81 {
82 return strrchr (s, c); /* { dg-regexp "\[^\n\r\]+: warning: .strrchr. argument 1 declared attribute .nonstring. \\\[-Wstringop-overread\[^\n\r\]*" "strrchr" } */
83 }
84
85 char* strcpy_nonstring (char *d, NONSTRING const char *s)
86 {
87 return strcpy (d, s); /* { dg-regexp "\[^\n\r\]+: warning: .strcpy. argument 2 declared attribute .nonstring. \\\[-Wstringop-overread\[^\n\r\]*" "strcpy" } */
88 }
89
90 char* strncpy_nonstring (char *d)
91 {
92 return strncpy (d, ns5, sizeof ns5 + 1); /* { dg-regexp "\[^\n\r\]+: warning: .strncpy. argument 2 declared attribute .nonstring. \[^\n\r\]+ \\\[-Wstringop-overread\[^\n\r\]*" "strncpy" } */
93 }
94
95 char* strstr_nonstring_1 (NONSTRING const char *a, const char *b)
96 {
97 return strstr (a, b); /* { dg-regexp "\[^\n\r\]+: warning: .strstr. argument 1 declared attribute .nonstring. \\\[-Wstringop-overread\[^\n\r\]*" "strstr" } */
98 }
99
100 char* strstr_nonstring_2 (const char *a, NONSTRING const char *b)
101 {
102 return strstr (a, b); /* { dg-regexp "\[^\n\r\]+: warning: .strstr. argument 2 declared attribute .nonstring. \\\[-Wstringop-overread\[^\n\r\]*" "strstr" } */
103 }
104
105 char* stdup_nonstring (NONSTRING const char *s)
106 {
107 return strdup (s); /* { dg-regexp "\[^\n\r\]+: warning: .strdup. argument 1 declared attribute .nonstring. \\\[-Wstringop-overread\[^\n\r\]*" "strdup" } */
108 }
109
110 size_t strlen_nonstring (NONSTRING const char *s)
111 {
112 return strlen (s); /* { dg-regexp "\[^\n\r\]+: warning: .strlen. argument 1 declared attribute .nonstring. \\\[-Wstringop-overread\[^\n\r\]*" "strlen" } */
113 }
114
115 int printf_nonstring (NONSTRING const char *s)
116 {
117 return printf (s); /* { dg-regexp "\[^\n\r\]+: warning: .printf. argument 1 declared attribute .nonstring. \\\[-Wstringop-overread\[^\n\r\]*" "printf" } */
118 }
119
120 int sprintf_nonstring_2 (char *d, NONSTRING const char *s)
121 {
122 return sprintf (d, s); /* { dg-regexp "\[^\n\r\]+: warning: .sprintf. argument 2 declared attribute .nonstring. \\\[-Wstringop-overread\[^\n\r\]*" "sprintf" } */
123 }