Viewing file:  attr-nonstring.c (4.91 KB) -rw-r--r--
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/* PR middle-end/85359 - duplicate -Wstringop-overflow for a strcmp call
with a nonstring pointer
{ dg-do compile }
{ dg-options "-O2 -Wall" } */
typedef __SIZE_TYPE__ size_t;
typedef __builtin_va_list va_list;
int printf (const char*, ...);
int puts (const char*);
int puts_unlocked (const char*);
int sprintf (char*, const char*, ...);
int snprintf (char*, size_t, const char*, ...);
int vsprintf (char*, const char*, va_list);
int vsnprintf (char*, size_t, const char*, va_list);
int strcmp (const char*, const char*);
int strncmp (const char*, const char*, size_t);
char* stpcpy (char*, const char*);
char* stpncpy (char*, const char*, size_t);
char* strcat (char*, const char*);
char* strncat (char*, const char*, size_t);
char* strcpy (char*, const char*);
char* strncpy (char*, const char*, size_t);
char* strchr (const char*, int);
char* strrchr (const char*, int);
char* strstr (const char*, const char*);
char* strdup (const char*);
size_t strlen (const char*);
size_t strnlen (const char*, size_t);
char* strndup (const char*, size_t);
#define NONSTRING __attribute__ ((nonstring))
extern char ns5[5] NONSTRING;
int strcmp_nonstring_1 (NONSTRING const char *a, const char *b)
{
/* dg-warning matches one or more instances of the warning so it's
no good on its own. Use dg-regexp instead to verify that just
one instance of the warning is issued. See gcc.dg/pr64223-1
for a different approach. */
return strcmp (a, b); /* { dg-regexp "\[^\n\r\]+: warning: .strcmp. argument 1 declared attribute .nonstring. \\\[-Wstringop-overread\[^\n\r\]*" "strcmp" } */
}
int strcmp_nonstring_2 (const char *a, NONSTRING const char *b)
{
return strcmp (a, b); /* { dg-regexp "\[^\n\r\]+: warning: .strcmp. argument 2 declared attribute .nonstring. \\\[-Wstringop-overread\[^\n\r\]*" "strcmp" } */
}
int strncmp_nonstring_1 (const char *s)
{
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" } */
}
int strncmp_nonstring_2 (const char *s)
{
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" } */
}
char* stpcpy_nonstring (char *d, NONSTRING const char *s)
{
return stpcpy (d, s); /* { dg-regexp "\[^\n\r\]+: warning: .stpcpy. argument 2 declared attribute .nonstring. \\\[-Wstringop-overread\[^\n\r\]*" "stpcpy" } */
}
char* stpncpy_nonstring (char *d)
{
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" } */
}
char* strchr_nonstring (NONSTRING const char *s, int c)
{
return strchr (s, c); /* { dg-regexp "\[^\n\r\]+: warning: .strchr. argument 1 declared attribute .nonstring. \\\[-Wstringop-overread\[^\n\r\]*" "strchr" } */
}
char* strrchr_nonstring (NONSTRING const char *s, int c)
{
return strrchr (s, c); /* { dg-regexp "\[^\n\r\]+: warning: .strrchr. argument 1 declared attribute .nonstring. \\\[-Wstringop-overread\[^\n\r\]*" "strrchr" } */
}
char* strcpy_nonstring (char *d, NONSTRING const char *s)
{
return strcpy (d, s); /* { dg-regexp "\[^\n\r\]+: warning: .strcpy. argument 2 declared attribute .nonstring. \\\[-Wstringop-overread\[^\n\r\]*" "strcpy" } */
}
char* strncpy_nonstring (char *d)
{
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" } */
}
char* strstr_nonstring_1 (NONSTRING const char *a, const char *b)
{
return strstr (a, b); /* { dg-regexp "\[^\n\r\]+: warning: .strstr. argument 1 declared attribute .nonstring. \\\[-Wstringop-overread\[^\n\r\]*" "strstr" } */
}
char* strstr_nonstring_2 (const char *a, NONSTRING const char *b)
{
return strstr (a, b); /* { dg-regexp "\[^\n\r\]+: warning: .strstr. argument 2 declared attribute .nonstring. \\\[-Wstringop-overread\[^\n\r\]*" "strstr" } */
}
char* stdup_nonstring (NONSTRING const char *s)
{
return strdup (s); /* { dg-regexp "\[^\n\r\]+: warning: .strdup. argument 1 declared attribute .nonstring. \\\[-Wstringop-overread\[^\n\r\]*" "strdup" } */
}
size_t strlen_nonstring (NONSTRING const char *s)
{
return strlen (s); /* { dg-regexp "\[^\n\r\]+: warning: .strlen. argument 1 declared attribute .nonstring. \\\[-Wstringop-overread\[^\n\r\]*" "strlen" } */
}
int printf_nonstring (NONSTRING const char *s)
{
return printf (s); /* { dg-regexp "\[^\n\r\]+: warning: .printf. argument 1 declared attribute .nonstring. \\\[-Wstringop-overread\[^\n\r\]*" "printf" } */
}
int sprintf_nonstring_2 (char *d, NONSTRING const char *s)
{
return sprintf (d, s); /* { dg-regexp "\[^\n\r\]+: warning: .sprintf. argument 2 declared attribute .nonstring. \\\[-Wstringop-overread\[^\n\r\]*" "sprintf" } */
}
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