| // Test -Wsizeof-pointer-memaccess warnings. |
| // { dg-do compile } |
| // { dg-options "-Wall -Wno-array-bounds -Wno-sizeof-array-argument -Wno-stringop-overflow -Wno-stringop-overread -Wno-stringop-truncation" } |
| // Test just twice, once with -O0 non-fortified, once with -O2 fortified. |
| // { dg-skip-if "" { *-*-* } { "*" } { "-O0" "-O2" } } |
| // { dg-skip-if "" { *-*-* } { "-flto" } { "" } } |
| // { dg-require-effective-target alloca } |
| |
| extern "C" { |
| |
| typedef __SIZE_TYPE__ size_t; |
| extern void *memset (void *, int, size_t); |
| extern void *memcpy (void *__restrict, const void *__restrict, size_t); |
| extern void *memmove (void *__restrict, const void *__restrict, size_t); |
| extern int memcmp (const void *, const void *, size_t); |
| extern char *strncpy (char *__restrict, const char *__restrict, size_t); |
| extern char *strncat (char *__restrict, const char *__restrict, size_t); |
| extern char *stpncpy (char *__restrict, const char *__restrict, size_t); |
| extern char *strndup (const char *, size_t); |
| extern int strncmp (const char *, const char *, size_t); |
| extern int strncasecmp (const char *, const char *, size_t); |
| |
| #ifdef __OPTIMIZE__ |
| # define bos(ptr) __builtin_object_size (ptr, 1) |
| # define bos0(ptr) __builtin_object_size (ptr, 0) |
| |
| __attribute__((__always_inline__, __gnu_inline__, __artificial__)) |
| extern inline void * |
| memset (void *dest, int c, size_t len) |
| { |
| return __builtin___memset_chk (dest, c, len, bos0 (dest)); |
| } |
| |
| __attribute__((__always_inline__, __gnu_inline__, __artificial__)) |
| extern inline void * |
| memcpy (void *__restrict dest, const void *__restrict src, size_t len) |
| { |
| return __builtin___memcpy_chk (dest, src, len, bos0 (dest)); |
| } |
| |
| __attribute__((__always_inline__, __gnu_inline__, __artificial__)) |
| extern inline void * |
| memmove (void *dest, const void *src, size_t len) |
| { |
| return __builtin___memmove_chk (dest, src, len, bos0 (dest)); |
| } |
| |
| __attribute__((__always_inline__, __gnu_inline__, __artificial__)) |
| extern inline char * |
| strncpy (char *__restrict dest, const char *__restrict src, size_t len) |
| { |
| return __builtin___strncpy_chk (dest, src, len, bos (dest)); |
| } |
| |
| __attribute__((__always_inline__, __gnu_inline__, __artificial__)) |
| extern inline char * |
| strncat (char *dest, const char *src, size_t len) |
| { |
| return __builtin___strncat_chk (dest, src, len, bos (dest)); |
| } |
| |
| __attribute__((__always_inline__, __gnu_inline__, __artificial__)) |
| extern inline char * |
| stpncpy (char *__restrict dest, const char *__restrict src, size_t len) |
| { |
| return __builtin___stpncpy_chk (dest, src, len, bos (dest)); |
| } |
| #endif |
| |
| } |
| |
| struct A { short a, b; int c, d; long e, f; }; |
| typedef struct A TA; |
| typedef struct A *PA; |
| typedef TA *PTA; |
| struct B {}; |
| typedef struct B TB; |
| typedef struct B *PB; |
| typedef TB *PTB; |
| typedef int X[3][3][3]; |
| |
| int |
| f1 (void *x, int z) |
| { |
| struct A a, *pa1 = &a; |
| TA *pa2 = &a; |
| PA pa3 = &a; |
| PTA pa4 = &a; |
| memset (&a, 0, sizeof (&a)); // { dg-warning "call is the same expression as the destination; did you mean to remove the addressof" } |
| memset (pa1, 0, sizeof (pa1)); // { dg-warning "call is the same expression as the destination; did you mean to dereference it" } |
| memset (pa2, 0, sizeof pa2); // { dg-warning "call is the same expression as the destination; did you mean to dereference it" } |
| memset (pa3, 0, sizeof (pa3)); // { dg-warning "call is the same expression as the destination; did you mean to dereference it" } |
| memset (pa4, 0, sizeof pa4); // { dg-warning "call is the same expression as the destination; did you mean to dereference it" } |
| memset (pa1, 0, sizeof (struct A *)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } |
| memset (pa2, 0, sizeof (PTA)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } |
| memset (pa3, 0, sizeof (PA)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } |
| memset (pa4, 0, sizeof (__typeof (pa4))); // { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } |
| |
| memcpy (&a, x, sizeof (&a)); // { dg-warning "call is the same expression as the destination; did you mean to remove the addressof" } |
| memcpy (pa1, x, sizeof (pa1)); // { dg-warning "call is the same expression as the destination; did you mean to dereference it" } |
| memcpy (pa2, x, sizeof pa2); // { dg-warning "call is the same expression as the destination; did you mean to dereference it" } |
| memcpy (pa3, x, sizeof (pa3)); // { dg-warning "call is the same expression as the destination; did you mean to dereference it" } |
| memcpy (pa4, x, sizeof pa4); // { dg-warning "call is the same expression as the destination; did you mean to dereference it" } |
| memcpy (pa1, x, sizeof (struct A *)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } |
| memcpy (pa2, x, sizeof (PTA)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } |
| memcpy (pa3, x, sizeof (PA)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } |
| memcpy (pa4, x, sizeof (__typeof (pa4))); // { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } |
| |
| memcpy (x, &a, sizeof (&a)); // { dg-warning "call is the same expression as the source; did you mean to remove the addressof" } |
| memcpy (x, pa1, sizeof (pa1)); // { dg-warning "call is the same expression as the source; did you mean to dereference it" } |
| memcpy (x, pa2, sizeof pa2); // { dg-warning "call is the same expression as the source; did you mean to dereference it" } |
| memcpy (x, pa3, sizeof (pa3)); // { dg-warning "call is the same expression as the source; did you mean to dereference it" } |
| memcpy (x, pa4, sizeof pa4); // { dg-warning "call is the same expression as the source; did you mean to dereference it" } |
| memcpy (x, pa1, sizeof (struct A *)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } |
| memcpy (x, pa2, sizeof (PTA)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } |
| memcpy (x, pa3, sizeof (PA)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } |
| memcpy (x, pa4, sizeof (__typeof (pa4))); // { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } |
| |
| memmove (&a, x, sizeof (&a)); // { dg-warning "call is the same expression as the destination; did you mean to remove the addressof" } |
| memmove (pa1, x, sizeof (pa1)); // { dg-warning "call is the same expression as the destination; did you mean to dereference it" } |
| memmove (pa2, x, sizeof pa2); // { dg-warning "call is the same expression as the destination; did you mean to dereference it" } |
| memmove (pa3, x, sizeof (pa3)); // { dg-warning "call is the same expression as the destination; did you mean to dereference it" } |
| memmove (pa4, x, sizeof pa4); // { dg-warning "call is the same expression as the destination; did you mean to dereference it" } |
| memmove (pa1, x, sizeof (struct A *)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } |
| memmove (pa2, x, sizeof (PTA)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } |
| memmove (pa3, x, sizeof (PA)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } |
| memmove (pa4, x, sizeof (__typeof (pa4)));// { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } |
| |
| memmove (x, &a, sizeof (&a)); // { dg-warning "call is the same expression as the source; did you mean to remove the addressof" } |
| memmove (x, pa1, sizeof (pa1)); // { dg-warning "call is the same expression as the source; did you mean to dereference it" } |
| memmove (x, pa2, sizeof pa2); // { dg-warning "call is the same expression as the source; did you mean to dereference it" } |
| memmove (x, pa3, sizeof (pa3)); // { dg-warning "call is the same expression as the source; did you mean to dereference it" } |
| memmove (x, pa4, sizeof pa4); // { dg-warning "call is the same expression as the source; did you mean to dereference it" } |
| memmove (x, pa1, sizeof (struct A *)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } |
| memmove (x, pa2, sizeof (PTA)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } |
| memmove (x, pa3, sizeof (PA)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } |
| memmove (x, pa4, sizeof (__typeof (pa4)));// { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } |
| |
| z += memcmp (&a, x, sizeof (&a)); // { dg-warning "call is the same expression as the first source; did you mean to remove the addressof" } |
| z += memcmp (pa1, x, sizeof (pa1)); // { dg-warning "call is the same expression as the first source; did you mean to dereference it" } |
| z += memcmp (pa2, x, sizeof pa2); // { dg-warning "call is the same expression as the first source; did you mean to dereference it" } |
| z += memcmp (pa3, x, sizeof (pa3)); // { dg-warning "call is the same expression as the first source; did you mean to dereference it" } |
| z += memcmp (pa4, x, sizeof pa4); // { dg-warning "call is the same expression as the first source; did you mean to dereference it" } |
| z += memcmp (pa1, x, sizeof (struct A *));// { dg-warning "call is the same pointer type \[^\n\r\]* as the first source; expected \[^\n\r\]* or an explicit length" } |
| z += memcmp (pa2, x, sizeof (PTA)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the first source; expected \[^\n\r\]* or an explicit length" } |
| z += memcmp (pa3, x, sizeof (PA)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the first source; expected \[^\n\r\]* or an explicit length" } |
| |
| z += memcmp (x, &a, sizeof (&a)); // { dg-warning "call is the same expression as the second source; did you mean to remove the addressof" } |
| z += memcmp (x, pa1, sizeof (pa1)); // { dg-warning "call is the same expression as the second source; did you mean to dereference it" } |
| z += memcmp (x, pa2, sizeof pa2); // { dg-warning "call is the same expression as the second source; did you mean to dereference it" } |
| z += memcmp (x, pa3, sizeof (pa3)); // { dg-warning "call is the same expression as the second source; did you mean to dereference it" } |
| z += memcmp (x, pa4, sizeof pa4); // { dg-warning "call is the same expression as the second source; did you mean to dereference it" } |
| z += memcmp (x, pa1, sizeof (struct A *));// { dg-warning "call is the same pointer type \[^\n\r\]* as the second source; expected \[^\n\r\]* or an explicit length" } |
| z += memcmp (x, pa2, sizeof (PTA)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the second source; expected \[^\n\r\]* or an explicit length" } |
| z += memcmp (x, pa3, sizeof (PA)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the second source; expected \[^\n\r\]* or an explicit length" } |
| |
| // These are correct, no warning. |
| memset (&a, 0, sizeof a); |
| memset (&a, 0, sizeof (a)); |
| memset (&a, 0, sizeof (struct A)); |
| memset (&a, 0, sizeof (const struct A)); |
| memset (&a, 0, sizeof (volatile struct A)); |
| memset (&a, 0, sizeof (volatile const struct A)); |
| memset (&a, 0, sizeof (TA)); |
| memset (&a, 0, sizeof (__typeof (*&a))); |
| memset (pa1, 0, sizeof (*pa1)); |
| memset (pa2, 0, sizeof (*pa3)); |
| memset (pa3, 0, sizeof (__typeof (*pa3))); |
| // These are probably broken, but obfuscated, no warning. |
| memset ((void *) &a, 0, sizeof (&a)); |
| memset ((char *) &a, 0, sizeof (&a)); |
| memset (&a, 0, sizeof (&a) + 0); |
| memset (&a, 0, 0 + sizeof (&a)); |
| |
| // These are correct, no warning. |
| memcpy (&a, x, sizeof a); |
| memcpy (&a, x, sizeof (a)); |
| memcpy (&a, x, sizeof (struct A)); |
| memcpy (&a, x, sizeof (const struct A)); |
| memcpy (&a, x, sizeof (volatile struct A)); |
| memcpy (&a, x, sizeof (volatile const struct A)); |
| memcpy (&a, x, sizeof (TA)); |
| memcpy (&a, x, sizeof (__typeof (*&a))); |
| memcpy (pa1, x, sizeof (*pa1)); |
| memcpy (pa2, x, sizeof (*pa3)); |
| memcpy (pa3, x, sizeof (__typeof (*pa3))); |
| // These are probably broken, but obfuscated, no warning. |
| memcpy ((void *) &a, x, sizeof (&a)); |
| memcpy ((char *) &a, x, sizeof (&a)); |
| memcpy (&a, x, sizeof (&a) + 0); |
| memcpy (&a, x, 0 + sizeof (&a)); |
| |
| // These are correct, no warning. |
| memcpy (x, &a, sizeof a); |
| memcpy (x, &a, sizeof (a)); |
| memcpy (x, &a, sizeof (struct A)); |
| memcpy (x, &a, sizeof (const struct A)); |
| memcpy (x, &a, sizeof (volatile struct A)); |
| memcpy (x, &a, sizeof (volatile const struct A)); |
| memcpy (x, &a, sizeof (TA)); |
| memcpy (x, &a, sizeof (__typeof (*&a))); |
| memcpy (x, pa1, sizeof (*pa1)); |
| memcpy (x, pa2, sizeof (*pa3)); |
| memcpy (x, pa3, sizeof (__typeof (*pa3))); |
| // These are probably broken, but obfuscated, no warning. |
| memcpy (x, (void *) &a, sizeof (&a)); |
| memcpy (x, (char *) &a, sizeof (&a)); |
| memcpy (x, &a, sizeof (&a) + 0); |
| memcpy (x, &a, 0 + sizeof (&a)); |
| |
| // These are correct, no warning. |
| memmove (&a, x, sizeof a); |
| memmove (&a, x, sizeof (a)); |
| memmove (&a, x, sizeof (struct A)); |
| memmove (&a, x, sizeof (const struct A)); |
| memmove (&a, x, sizeof (volatile struct A)); |
| memmove (&a, x, sizeof (volatile const struct A)); |
| memmove (&a, x, sizeof (TA)); |
| memmove (&a, x, sizeof (__typeof (*&a))); |
| memmove (pa1, x, sizeof (*pa1)); |
| memmove (pa2, x, sizeof (*pa3)); |
| memmove (pa3, x, sizeof (__typeof (*pa3))); |
| // These are probably broken, but obfuscated, no warning. |
| memmove ((void *) &a, x, sizeof (&a)); |
| memmove ((char *) &a, x, sizeof (&a)); |
| memmove (&a, x, sizeof (&a) + 0); |
| memmove (&a, x, 0 + sizeof (&a)); |
| |
| // These are correct, no warning. |
| memmove (x, &a, sizeof a); |
| memmove (x, &a, sizeof (a)); |
| memmove (x, &a, sizeof (struct A)); |
| memmove (x, &a, sizeof (const struct A)); |
| memmove (x, &a, sizeof (volatile struct A)); |
| memmove (x, &a, sizeof (volatile const struct A)); |
| memmove (x, &a, sizeof (TA)); |
| memmove (x, &a, sizeof (__typeof (*&a))); |
| memmove (x, pa1, sizeof (*pa1)); |
| memmove (x, pa2, sizeof (*pa3)); |
| memmove (x, pa3, sizeof (__typeof (*pa3))); |
| // These are probably broken, but obfuscated, no warning. |
| memmove (x, (void *) &a, sizeof (&a)); |
| memmove (x, (char *) &a, sizeof (&a)); |
| memmove (x, &a, sizeof (&a) + 0); |
| memmove (x, &a, 0 + sizeof (&a)); |
| |
| // These are correct, no warning. |
| z += memcmp (&a, x, sizeof a); |
| z += memcmp (&a, x, sizeof (a)); |
| z += memcmp (&a, x, sizeof (struct A)); |
| z += memcmp (&a, x, sizeof (const struct A)); |
| z += memcmp (&a, x, sizeof (volatile struct A)); |
| z += memcmp (&a, x, sizeof (volatile const struct A)); |
| z += memcmp (&a, x, sizeof (TA)); |
| z += memcmp (&a, x, sizeof (__typeof (*&a))); |
| z += memcmp (pa1, x, sizeof (*pa1)); |
| z += memcmp (pa2, x, sizeof (*pa3)); |
| z += memcmp (pa3, x, sizeof (__typeof (*pa3))); |
| // These are probably broken, but obfuscated, no warning. |
| z += memcmp ((void *) &a, x, sizeof (&a)); |
| z += memcmp ((char *) &a, x, sizeof (&a)); |
| z += memcmp (&a, x, sizeof (&a) + 0); |
| z += memcmp (&a, x, 0 + sizeof (&a)); |
| |
| // These are correct, no warning. |
| z += memcmp (x, &a, sizeof a); |
| z += memcmp (x, &a, sizeof (a)); |
| z += memcmp (x, &a, sizeof (struct A)); |
| z += memcmp (x, &a, sizeof (const struct A)); |
| z += memcmp (x, &a, sizeof (volatile struct A)); |
| z += memcmp (x, &a, sizeof (volatile const struct A)); |
| z += memcmp (x, &a, sizeof (TA)); |
| z += memcmp (x, &a, sizeof (__typeof (*&a))); |
| z += memcmp (x, pa1, sizeof (*pa1)); |
| z += memcmp (x, pa2, sizeof (*pa3)); |
| z += memcmp (x, pa3, sizeof (__typeof (*pa3))); |
| // These are probably broken, but obfuscated, no warning. |
| z += memcmp (x, (void *) &a, sizeof (&a)); |
| z += memcmp (x, (char *) &a, sizeof (&a)); |
| z += memcmp (x, &a, sizeof (&a) + 0); |
| z += memcmp (x, &a, 0 + sizeof (&a)); |
| |
| return z; |
| } |
| |
| int |
| f2 (void *x, int z) |
| { |
| struct B b, *pb1 = &b; |
| TB *pb2 = &b; |
| PB pb3 = &b; |
| PTB pb4 = &b; |
| memset (&b, 0, sizeof (&b)); // { dg-warning "call is the same expression as the destination; did you mean to remove the addressof" } |
| memset (pb1, 0, sizeof (pb1)); // { dg-warning "call is the same expression as the destination; did you mean to dereference it" } |
| memset (pb2, 0, sizeof pb2); // { dg-warning "call is the same expression as the destination; did you mean to dereference it" } |
| memset (pb3, 0, sizeof (pb3)); // { dg-warning "call is the same expression as the destination; did you mean to dereference it" } |
| memset (pb4, 0, sizeof pb4); // { dg-warning "call is the same expression as the destination; did you mean to dereference it" } |
| memset (pb1, 0, sizeof (struct B *)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } |
| memset (pb2, 0, sizeof (PTB)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } |
| memset (pb3, 0, sizeof (PB)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } |
| memset (pb4, 0, sizeof (__typeof (pb4))); // { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } |
| |
| memcpy (&b, x, sizeof (&b)); // { dg-warning "call is the same expression as the destination; did you mean to remove the addressof" } |
| memcpy (pb1, x, sizeof (pb1)); // { dg-warning "call is the same expression as the destination; did you mean to dereference it" } |
| memcpy (pb2, x, sizeof pb2); // { dg-warning "call is the same expression as the destination; did you mean to dereference it" } |
| memcpy (pb3, x, sizeof (pb3)); // { dg-warning "call is the same expression as the destination; did you mean to dereference it" } |
| memcpy (pb4, x, sizeof pb4); // { dg-warning "call is the same expression as the destination; did you mean to dereference it" } |
| memcpy (pb1, x, sizeof (struct B *)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } |
| memcpy (pb2, x, sizeof (PTB)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } |
| memcpy (pb3, x, sizeof (PB)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } |
| memcpy (pb4, x, sizeof (__typeof (pb4))); // { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } |
| |
| memcpy (x, &b, sizeof (&b)); // { dg-warning "call is the same expression as the source; did you mean to remove the addressof" } |
| memcpy (x, pb1, sizeof (pb1)); // { dg-warning "call is the same expression as the source; did you mean to dereference it" } |
| memcpy (x, pb2, sizeof pb2); // { dg-warning "call is the same expression as the source; did you mean to dereference it" } |
| memcpy (x, pb3, sizeof (pb3)); // { dg-warning "call is the same expression as the source; did you mean to dereference it" } |
| memcpy (x, pb4, sizeof pb4); // { dg-warning "call is the same expression as the source; did you mean to dereference it" } |
| memcpy (x, pb1, sizeof (struct B *)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } |
| memcpy (x, pb2, sizeof (PTB)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } |
| memcpy (x, pb3, sizeof (PB)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } |
| memcpy (x, pb4, sizeof (__typeof (pb4))); // { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } |
| |
| memmove (&b, x, sizeof (&b)); // { dg-warning "call is the same expression as the destination; did you mean to remove the addressof" } |
| memmove (pb1, x, sizeof (pb1)); // { dg-warning "call is the same expression as the destination; did you mean to dereference it" } |
| memmove (pb2, x, sizeof pb2); // { dg-warning "call is the same expression as the destination; did you mean to dereference it" } |
| memmove (pb3, x, sizeof (pb3)); // { dg-warning "call is the same expression as the destination; did you mean to dereference it" } |
| memmove (pb4, x, sizeof pb4); // { dg-warning "call is the same expression as the destination; did you mean to dereference it" } |
| memmove (pb1, x, sizeof (struct B *)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } |
| memmove (pb2, x, sizeof (PTB)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } |
| memmove (pb3, x, sizeof (PB)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } |
| memmove (pb4, x, sizeof (__typeof (pb4)));// { dg-warning "call is the same pointer type \[^\n\r\]* as the destination; expected \[^\n\r\]* or an explicit length" } |
| |
| memmove (x, &b, sizeof (&b)); // { dg-warning "call is the same expression as the source; did you mean to remove the addressof" } |
| memmove (x, pb1, sizeof (pb1)); // { dg-warning "call is the same expression as the source; did you mean to dereference it" } |
| memmove (x, pb2, sizeof pb2); // { dg-warning "call is the same expression as the source; did you mean to dereference it" } |
| memmove (x, pb3, sizeof (pb3)); // { dg-warning "call is the same expression as the source; did you mean to dereference it" } |
| memmove (x, pb4, sizeof pb4); // { dg-warning "call is the same expression as the source; did you mean to dereference it" } |
| memmove (x, pb1, sizeof (struct B *)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } |
| memmove (x, pb2, sizeof (PTB)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } |
| memmove (x, pb3, sizeof (PB)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } |
| memmove (x, pb4, sizeof (__typeof (pb4)));// { dg-warning "call is the same pointer type \[^\n\r\]* as the source; expected \[^\n\r\]* or an explicit length" } |
| |
| z += memcmp (&b, x, sizeof (&b)); // { dg-warning "call is the same expression as the first source; did you mean to remove the addressof" } |
| z += memcmp (pb1, x, sizeof (pb1)); // { dg-warning "call is the same expression as the first source; did you mean to dereference it" } |
| z += memcmp (pb2, x, sizeof pb2); // { dg-warning "call is the same expression as the first source; did you mean to dereference it" } |
| z += memcmp (pb3, x, sizeof (pb3)); // { dg-warning "call is the same expression as the first source; did you mean to dereference it" } |
| z += memcmp (pb4, x, sizeof pb4); // { dg-warning "call is the same expression as the first source; did you mean to dereference it" } |
| z += memcmp (pb1, x, sizeof (struct B *));// { dg-warning "call is the same pointer type \[^\n\r\]* as the first source; expected \[^\n\r\]* or an explicit length" } |
| z += memcmp (pb2, x, sizeof (PTB)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the first source; expected \[^\n\r\]* or an explicit length" } |
| z += memcmp (pb3, x, sizeof (PB)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the first source; expected \[^\n\r\]* or an explicit length" } |
| |
| z += memcmp (x, &b, sizeof (&b)); // { dg-warning "call is the same expression as the second source; did you mean to remove the addressof" } |
| z += memcmp (x, pb1, sizeof (pb1)); // { dg-warning "call is the same expression as the second source; did you mean to dereference it" } |
| z += memcmp (x, pb2, sizeof pb2); // { dg-warning "call is the same expression as the second source; did you mean to dereference it" } |
| z += memcmp (x, pb3, sizeof (pb3)); // { dg-warning "call is the same expression as the second source; did you mean to dereference it" } |
| z += memcmp (x, pb4, sizeof pb4); // { dg-warning "call is the same expression as the second source; did you mean to dereference it" } |
| z += memcmp (x, pb1, sizeof (struct B *));// { dg-warning "call is the same pointer type \[^\n\r\]* as the second source; expected \[^\n\r\]* or an explicit length" } |
| z += memcmp (x, pb2, sizeof (PTB)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the second source; expected \[^\n\r\]* or an explicit length" } |
| z += memcmp (x, pb3, sizeof (PB)); // { dg-warning "call is the same pointer type \[^\n\r\]* as the second source; expected \[^\n\r\]* or an explicit length" } |
| |
| // These are correct, no warning. |
| memset (&b, 0, sizeof b); |
| memset (&b, 0, sizeof (b)); |
| memset (&b, 0, sizeof (struct B)); |
| memset (&b, 0, sizeof (const struct B)); |
| memset (&b, 0, sizeof (volatile struct B)); |
| memset (&b, 0, sizeof (volatile const struct B)); |
| memset (&b, 0, sizeof (TB)); |
| memset (&b, 0, sizeof (__typeof (*&b))); |
| memset (pb1, 0, sizeof (*pb1)); |
| memset (pb2, 0, sizeof (*pb3)); |
| memset (pb3, 0, sizeof (__typeof (*pb3))); |
| // These are probably broken, but obfuscated, no warning. |
| memset ((void *) &b, 0, sizeof (&b)); |
| memset ((char *) &b, 0, sizeof (&b)); |
| memset (&b, 0, sizeof (&b) + 0); |
| memset (&b, 0, 0 + sizeof (&b)); |
| |
| // These are correct, no warning. |
| memcpy (&b, x, sizeof b); |
| memcpy (&b, x, sizeof (b)); |
| memcpy (&b, x, sizeof (struct B)); |
| memcpy (&b, x, sizeof (const struct B)); |
| memcpy (&b, x, sizeof (volatile struct B)); |
| memcpy (&b, x, sizeof (volatile const struct B)); |
| memcpy (&b, x, sizeof (TB)); |
| memcpy (&b, x, sizeof (__typeof (*&b))); |
| memcpy (pb1, x, sizeof (*pb1)); |
| memcpy (pb2, x, sizeof (*pb3)); |
| memcpy (pb3, x, sizeof (__typeof (*pb3))); |
| // These are probably broken, but obfuscated, no warning. |
| memcpy ((void *) &b, x, sizeof (&b)); |
| memcpy ((char *) &b, x, sizeof (&b)); |
| memcpy (&b, x, sizeof (&b) + 0); |
| memcpy (&b, x, 0 + sizeof (&b)); |
| |
| // These are correct, no warning. |
| memcpy (x, &b, sizeof b); |
| memcpy (x, &b, sizeof (b)); |
| memcpy (x, &b, sizeof (struct B)); |
| memcpy (x, &b, sizeof (const struct B)); |
| memcpy (x, &b, sizeof (volatile struct B)); |
| memcpy (x, &b, sizeof (volatile const struct B)); |
| memcpy (x, &b, sizeof (TB)); |
| memcpy (x, &b, sizeof (__typeof (*&b))); |
| memcpy (x, pb1, sizeof (*pb1)); |
| memcpy (x, pb2, sizeof (*pb3)); |
| memcpy (x, pb3, sizeof (__typeof (*pb3))); |
| // These are probably broken, but obfuscated, no warning. |
| memcpy (x, (void *) &b, sizeof (&b)); |
| memcpy (x, (char *) &b, sizeof (&b)); |
| memcpy (x, &b, sizeof (&b) + 0); |
| memcpy (x, &b, 0 + sizeof (&b)); |
| |
| // These are correct, no warning. |
| memmove (&b, x, sizeof b); |
| memmove (&b, x, sizeof (b)); |
| memmove (&b, x, sizeof (struct B)); |
| memmove (&b, x, sizeof (const struct B)); |
| memmove (&b, x, sizeof (volatile struct B)); |
| memmove (&b, x, sizeof (volatile const struct B)); |
| memmove (&b, x, sizeof (TB)); |
| memmove (&b, x, sizeof (__typeof (*&b))); |
| memmove (pb1, x, sizeof (*pb1)); |
| memmove (pb2, x, sizeof (*pb3)); |
| memmove (pb3, x, sizeof (__typeof (*pb3))); |
| // These are probably broken, but obfuscated, no warning. |
| memmove ((void *) &b, x, sizeof (&b)); |
| memmove ((char *) &b, x, sizeof (&b)); |
| memmove (&b, x, sizeof (&b) + 0); |
| memmove (&b, x, 0 + sizeof (&b)); |
| |
| // These are correct, no warning. |
| memmove (x, &b, sizeof b); |
| memmove (x, &b, sizeof (b)); |
| memmove (x, &b, sizeof (struct B)); |
| memmove (x, &b, sizeof (const struct B)); |
| memmove (x, &b, sizeof (volatile struct B)); |
| memmove (x, &b, sizeof (volatile const struct B)); |
| memmove (x, &b, sizeof (TB)); |
| memmove (x, &b, sizeof (__typeof (*&b))); |
| memmove (x, pb1, sizeof (*pb1)); |
| memmove (x, pb2, sizeof (*pb3)); |
| memmove (x, pb3, sizeof (__typeof (*pb3))); |
| // These are probably broken, but obfuscated, no warning. |
| memmove (x, (void *) &b, sizeof (&b)); |
| memmove (x, (char *) &b, sizeof (&b)); |
| memmove (x, &b, sizeof (&b) + 0); |
| memmove (x, &b, 0 + sizeof (&b)); |
| |
| // These are correct, no warning. |
| z += memcmp (&b, x, sizeof b); |
| z += memcmp (&b, x, sizeof (b)); |
| z += memcmp (&b, x, sizeof (struct B)); |
| z += memcmp (&b, x, sizeof (const struct B)); |
| z += memcmp (&b, x, sizeof (volatile struct B)); |
| z += memcmp (&b, x, sizeof (volatile const struct B)); |
| z += memcmp (&b, x, sizeof (TB)); |
| z += memcmp (&b, x, sizeof (__typeof (*&b))); |
| z += memcmp (pb1, x, sizeof (*pb1)); |
| z += memcmp (pb2, x, sizeof (*pb3)); |
| z += memcmp (pb3, x, sizeof (__typeof (*pb3))); |
| // These are probably broken, but obfuscated, no warning. |
| z += memcmp ((void *) &b, x, sizeof (&b)); |
| z += memcmp ((char *) &b, x, sizeof (&b)); |
| z += memcmp (&b, x, sizeof (&b) + 0); |
| z += memcmp (&b, x, 0 + sizeof (&b)); |
| |
| // These are correct, no warning. |
| z += memcmp (x, &b, sizeof b); |
| z += memcmp (x, &b, sizeof (b)); |
| z += memcmp (x, &b, sizeof (struct B)); |
| z += memcmp (x, &b, sizeof (const struct B)); |
| z += memcmp (x, &b, sizeof (volatile struct B)); |
| z += memcmp (x, &b, sizeof (volatile const struct B)); |
| z += memcmp (x, &b, sizeof (TB)); |
| z += memcmp (x, &b, sizeof (__typeof (*&b))); |
| z += memcmp (x, pb1, sizeof (*pb1)); |
| z += memcmp (x, pb2, sizeof (*pb3)); |
| z += memcmp (x, pb3, sizeof (__typeof (*pb3))); |
| // These are probably broken, but obfuscated, no warning. |
| z += memcmp (x, (void *) &b, sizeof (&b)); |
| z += memcmp (x, (char *) &b, sizeof (&b)); |
| z += memcmp (x, &b, sizeof (&b) + 0); |
| z += memcmp (x, &b, 0 + sizeof (&b)); |
| |
| return z; |
| } |
| |
| int |
| f3 (void *x, char *y, int z, X w) |
| { |
| unsigned char *y1 = (unsigned char *) __builtin_alloca (z + 16); |
| char buf1[7]; |
| signed char buf2[z + 32]; |
| long buf3[17]; |
| int *buf4[9]; |
| signed char *y2 = buf2; |
| char c; |
| char *y3; |
| memset (y, 0, sizeof (y)); // { dg-warning "call is the same expression as the destination; did you mean to provide an explicit length" } |
| memset (y1, 0, sizeof (y1)); // { dg-warning "call is the same expression as the destination; did you mean to provide an explicit length" } |
| memset (y2, 0, sizeof (y2)); // { dg-warning "call is the same expression as the destination; did you mean to provide an explicit length" } |
| memset (&c, 0, sizeof (&c)); // { dg-warning "call is the same expression as the destination; did you mean to remove the addressof" } |
| memset (w, 0, sizeof w); // { dg-warning "call is the same expression as the destination; did you mean to dereference it" } |
| |
| memcpy (y, x, sizeof (y)); // { dg-warning "call is the same expression as the destination; did you mean to provide an explicit length" } |
| memcpy (y1, x, sizeof (y1)); // { dg-warning "call is the same expression as the destination; did you mean to provide an explicit length" } |
| memcpy (y2, x, sizeof (y2)); // { dg-warning "call is the same expression as the destination; did you mean to provide an explicit length" } |
| memcpy (&c, x, sizeof (&c)); // { dg-warning "call is the same expression as the destination; did you mean to remove the addressof" } |
| memcpy (w, x, sizeof w); // { dg-warning "call is the same expression as the destination; did you mean to dereference it" } |
| |
| memcpy (x, y, sizeof (y)); // { dg-warning "call is the same expression as the source; did you mean to provide an explicit length" } |
| memcpy (x, y1, sizeof (y1)); // { dg-warning "call is the same expression as the source; did you mean to provide an explicit length" } |
| memcpy (x, y2, sizeof (y2)); // { dg-warning "call is the same expression as the source; did you mean to provide an explicit length" } |
| memcpy (x, &c, sizeof (&c)); // { dg-warning "call is the same expression as the source; did you mean to remove the addressof" } |
| memcpy (x, w, sizeof w); // { dg-warning "call is the same expression as the source; did you mean to dereference it" } |
| |
| memmove (y, x, sizeof (y)); // { dg-warning "call is the same expression as the destination; did you mean to provide an explicit length" } |
| memmove (y1, x, sizeof (y1)); // { dg-warning "call is the same expression as the destination; did you mean to provide an explicit length" } |
| memmove (y2, x, sizeof (y2)); // { dg-warning "call is the same expression as the destination; did you mean to provide an explicit length" } |
| memmove (&c, x, sizeof (&c)); // { dg-warning "call is the same expression as the destination; did you mean to remove the addressof" } |
| memmove (w, x, sizeof w); // { dg-warning "call is the same expression as the destination; did you mean to dereference it" } |
| |
| memmove (x, y, sizeof (y)); // { dg-warning "call is the same expression as the source; did you mean to provide an explicit length" } |
| memmove (x, y1, sizeof (y1)); // { dg-warning "call is the same expression as the source; did you mean to provide an explicit length" } |
| memmove (x, y2, sizeof (y2)); // { dg-warning "call is the same expression as the source; did you mean to provide an explicit length" } |
| memmove (x, &c, sizeof (&c)); // { dg-warning "call is the same expression as the source; did you mean to remove the addressof" } |
| memmove (x, w, sizeof w); // { dg-warning "call is the same expression as the source; did you mean to dereference it" } |
| |
| z += memcmp (y, x, sizeof (y)); // { dg-warning "call is the same expression as the first source; did you mean to provide an explicit length" } |
| z += memcmp (y1, x, sizeof (y1)); // { dg-warning "call is the same expression as the first source; did you mean to provide an explicit length" } |
| z += memcmp (y2, x, sizeof (y2)); // { dg-warning "call is the same expression as the first source; did you mean to provide an explicit length" } |
| z += memcmp (&c, x, sizeof (&c)); // { dg-warning "call is the same expression as the first source; did you mean to remove the addressof" } |
| z += memcmp (w, x, sizeof w); // { dg-warning "call is the same expression as the first source; did you mean to dereference it" } |
| |
| z += memcmp (x, y, sizeof (y)); // { dg-warning "call is the same expression as the second source; did you mean to provide an explicit length" } |
| z += memcmp (x, y1, sizeof (y1)); // { dg-warning "call is the same expression as the second source; did you mean to provide an explicit length" } |
| z += memcmp (x, y2, sizeof (y2)); // { dg-warning "call is the same expression as the second source; did you mean to provide an explicit length" } |
| z += memcmp (x, &c, sizeof (&c)); // { dg-warning "call is the same expression as the second source; did you mean to remove the addressof" } |
| z += memcmp (x, w, sizeof w); // { dg-warning "call is the same expression as the second source; did you mean to dereference it" } |
| |
| // These are correct, no warning. |
| memset (y, 0, sizeof (*y)); |
| memset (y1, 0, sizeof (*y2)); |
| memset (buf1, 0, sizeof buf1); |
| memset (buf3, 0, sizeof (buf3)); |
| memset (&buf3[0], 0, sizeof (buf3)); |
| memset (&buf4[0], 0, sizeof (buf4)); |
| memset (w, 0, sizeof (X)); |
| // These are probably broken, but obfuscated, no warning. |
| memset ((void *) y, 0, sizeof (y)); |
| memset ((char *) y1, 0, sizeof (y2)); |
| memset (y, 0, sizeof (y) + 0); |
| memset (y1, 0, 0 + sizeof (y2)); |
| memset ((void *) &c, 0, sizeof (&c)); |
| memset ((signed char *) &c, 0, sizeof (&c)); |
| memset (&c, 0, sizeof (&c) + 0); |
| memset (&c, 0, 0 + sizeof (&c)); |
| |
| // These are correct, no warning. |
| memcpy (y, x, sizeof (*y)); |
| memcpy (y1, x, sizeof (*y2)); |
| memcpy (buf1, x, sizeof buf1); |
| memcpy (buf3, x, sizeof (buf3)); |
| memcpy (&buf3[0], x, sizeof (buf3)); |
| memcpy (&buf4[0], x, sizeof (buf4)); |
| memcpy (&y3, y, sizeof (y3)); |
| memcpy ((char *) &y3, y, sizeof (y3)); |
| memcpy (w, x, sizeof (X)); |
| // These are probably broken, but obfuscated, no warning. |
| memcpy ((void *) y, x, sizeof (y)); |
| memcpy ((char *) y1, x, sizeof (y2)); |
| memcpy (y, x, sizeof (y) + 0); |
| memcpy (y1, x, 0 + sizeof (y2)); |
| memcpy ((void *) &c, x, sizeof (&c)); |
| memcpy ((signed char *) &c, x, sizeof (&c)); |
| memcpy (&c, x, sizeof (&c) + 0); |
| memcpy (&c, x, 0 + sizeof (&c)); |
| |
| // These are correct, no warning. |
| memcpy (x, y, sizeof (*y)); |
| memcpy (x, y1, sizeof (*y2)); |
| memcpy (x, buf1, sizeof buf1); |
| memcpy (x, buf3, sizeof (buf3)); |
| memcpy (x, &buf3[0], sizeof (buf3)); |
| memcpy (x, &buf4[0], sizeof (buf4)); |
| memcpy (y, &y3, sizeof (y3)); |
| memcpy (y, (char *) &y3, sizeof (y3)); |
| memcpy (x, w, sizeof (X)); |
| // These are probably broken, but obfuscated, no warning. |
| memcpy (x, (void *) y, sizeof (y)); |
| memcpy (x, (char *) y1, sizeof (y2)); |
| memcpy (x, y, sizeof (y) + 0); |
| memcpy (x, y1, 0 + sizeof (y2)); |
| memcpy (x, (void *) &c, sizeof (&c)); |
| memcpy (x, (signed char *) &c, sizeof (&c)); |
| memcpy (x, &c, sizeof (&c) + 0); |
| memcpy (x, &c, 0 + sizeof (&c)); |
| |
| // These are correct, no warning. |
| memmove (y, x, sizeof (*y)); |
| memmove (y1, x, sizeof (*y2)); |
| memmove (buf1, x, sizeof buf1); |
| memmove (buf3, x, sizeof (buf3)); |
| memmove (&buf3[0], x, sizeof (buf3)); |
| memmove (&buf4[0], x, sizeof (buf4)); |
| memmove (&y3, y, sizeof (y3)); |
| memmove ((char *) &y3, y, sizeof (y3)); |
| memmove (w, x, sizeof (X)); |
| // These are probably broken, but obfuscated, no warning. |
| memmove ((void *) y, x, sizeof (y)); |
| memmove ((char *) y1, x, sizeof (y2)); |
| memmove (y, x, sizeof (y) + 0); |
| memmove (y1, x, 0 + sizeof (y2)); |
| memmove ((void *) &c, x, sizeof (&c)); |
| memmove ((signed char *) &c, x, sizeof (&c)); |
| memmove (&c, x, sizeof (&c) + 0); |
| memmove (&c, x, 0 + sizeof (&c)); |
| |
| // These are correct, no warning. |
| memmove (x, y, sizeof (*y)); |
| memmove (x, y1, sizeof (*y2)); |
| memmove (x, buf1, sizeof buf1); |
| memmove (x, buf3, sizeof (buf3)); |
| memmove (x, &buf3[0], sizeof (buf3)); |
| memmove (x, &buf4[0], sizeof (buf4)); |
| memmove (y, &y3, sizeof (y3)); |
| memmove (y, (char *) &y3, sizeof (y3)); |
| memmove (x, w, sizeof (X)); |
| // These are probably broken, but obfuscated, no warning. |
| memmove (x, (void *) y, sizeof (y)); |
| memmove (x, (char *) y1, sizeof (y2)); |
| memmove (x, y, sizeof (y) + 0); |
| memmove (x, y1, 0 + sizeof (y2)); |
| memmove (x, (void *) &c, sizeof (&c)); |
| memmove (x, (signed char *) &c, sizeof (&c)); |
| memmove (x, &c, sizeof (&c) + 0); |
| memmove (x, &c, 0 + sizeof (&c)); |
| |
| // These are correct, no warning. |
| z += memcmp (y, x, sizeof (*y)); |
| z += memcmp (y1, x, sizeof (*y2)); |
| z += memcmp (buf1, x, sizeof buf1); |
| z += memcmp (buf3, x, sizeof (buf3)); |
| z += memcmp (&buf3[0], x, sizeof (buf3)); |
| z += memcmp (&buf4[0], x, sizeof (buf4)); |
| z += memcmp (&y3, y, sizeof (y3)); |
| z += memcmp ((char *) &y3, y, sizeof (y3)); |
| z += memcmp (w, x, sizeof (X)); |
| // These are probably broken, but obfuscated, no warning. |
| z += memcmp ((void *) y, x, sizeof (y)); |
| z += memcmp ((char *) y1, x, sizeof (y2)); |
| z += memcmp (y, x, sizeof (y) + 0); |
| z += memcmp (y1, x, 0 + sizeof (y2)); |
| z += memcmp ((void *) &c, x, sizeof (&c)); |
| z += memcmp ((signed char *) &c, x, sizeof (&c)); |
| z += memcmp (&c, x, sizeof (&c) + 0); |
| z += memcmp (&c, x, 0 + sizeof (&c)); |
| |
| // These are correct, no warning. |
| z += memcmp (x, y, sizeof (*y)); |
| z += memcmp (x, y1, sizeof (*y2)); |
| z += memcmp (x, buf1, sizeof buf1); |
| z += memcmp (x, buf3, sizeof (buf3)); |
| z += memcmp (x, &buf3[0], sizeof (buf3)); |
| z += memcmp (x, &buf4[0], sizeof (buf4)); |
| z += memcmp (y, &y3, sizeof (y3)); |
| z += memcmp (y, (char *) &y3, sizeof (y3)); |
| z += memcmp (x, w, sizeof (X)); |
| // These are probably broken, but obfuscated, no warning. |
| z += memcmp (x, (void *) y, sizeof (y)); |
| z += memcmp (x, (char *) y1, sizeof (y2)); |
| z += memcmp (x, y, sizeof (y) + 0); |
| z += memcmp (x, y1, 0 + sizeof (y2)); |
| z += memcmp (x, (void *) &c, sizeof (&c)); |
| z += memcmp (x, (signed char *) &c, sizeof (&c)); |
| z += memcmp (x, &c, sizeof (&c) + 0); |
| z += memcmp (x, &c, 0 + sizeof (&c)); |
| |
| return z; |
| } |
| |
| int |
| f4 (char *x, char **y, int z, char w[64]) |
| { |
| const char *s1 = "foobarbaz"; |
| const char *s2 = "abcde12345678"; |
| strncpy (x, s1, sizeof (s1)); // { dg-warning "call is the same expression as the source; did you mean to provide an explicit length" } |
| strncat (x, s2, sizeof (s2)); // { dg-warning "call is the same expression as the source; did you mean to provide an explicit length" } |
| stpncpy (x, s1, sizeof (s1)); // { dg-warning "call is the same expression as the source; did you mean to provide an explicit length" } |
| y[0] = strndup (s1, sizeof (s1)); // { dg-warning "call is the same expression as the source; did you mean to provide an explicit length" } |
| z += strncmp (s1, s2, sizeof (s1)); // { dg-warning "call is the same expression as the first source; did you mean to provide an explicit length" } |
| z += strncmp (s1, s2, sizeof (s2)); // { dg-warning "call is the same expression as the second source; did you mean to provide an explicit length" } |
| z += strncasecmp (s1, s2, sizeof (s1)); // { dg-warning "call is the same expression as the first source; did you mean to provide an explicit length" } |
| z += strncasecmp (s1, s2, sizeof (s2)); // { dg-warning "call is the same expression as the second source; did you mean to provide an explicit length" } |
| |
| strncpy (w, s1, sizeof (w)); // { dg-warning "call is the same expression as the destination; did you mean to provide an explicit length" } |
| strncat (w, s2, sizeof (w)); // { dg-warning "call is the same expression as the destination; did you mean to provide an explicit length" } |
| stpncpy (w, s1, sizeof (w)); // { dg-warning "call is the same expression as the destination; did you mean to provide an explicit length" } |
| |
| const char s3[] = "foobarbaz"; |
| const char s4[] = "abcde12345678"; |
| |
| // These are pointless when the destination is large enough, and |
| // cause overflow otherwise. They might as well be replaced by |
| // strcpy() or memcpy(). |
| strncpy (x, s3, sizeof (s3)); // { dg-warning "call is the same expression as the source; did you mean to use the size of the destination?" } |
| strncat (x, s4, sizeof (s4)); // { dg-warning "call is the same expression as the source; did you mean to use the size of the destination?" } |
| stpncpy (x, s3, sizeof (s3)); // { dg-warning "call is the same expression as the source; did you mean to use the size of the destination?" } |
| |
| // These are safe, no warning. |
| y[1] = strndup (s3, sizeof (s3)); |
| z += strncmp (s3, s4, sizeof (s3)); |
| z += strncmp (s3, s4, sizeof (s4)); |
| z += strncasecmp (s3, s4, sizeof (s3)); |
| z += strncasecmp (s3, s4, sizeof (s4)); |
| |
| return z; |
| } |
| |
| // { dg-prune-output "\[\n\r\]*overflows\[\n\r\]*" } |
