diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/c-c++-common/Wsizeof-pointer-memaccess2.c')
| -rw-r--r-- | gcc-4.9/gcc/testsuite/c-c++-common/Wsizeof-pointer-memaccess2.c | 482 |
1 files changed, 482 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/c-c++-common/Wsizeof-pointer-memaccess2.c b/gcc-4.9/gcc/testsuite/c-c++-common/Wsizeof-pointer-memaccess2.c new file mode 100644 index 000000000..73cdf0eab --- /dev/null +++ b/gcc-4.9/gcc/testsuite/c-c++-common/Wsizeof-pointer-memaccess2.c @@ -0,0 +1,482 @@ +/* Test -Wsizeof-pointer-memaccess warnings. */ +/* { dg-do compile } */ +/* { dg-options "-Wall -O2" } */ + +#define bos(ptr) __builtin_object_size (ptr, 1) +#define bos0(ptr) __builtin_object_size (ptr, 0) + +#define memset(dst, val, sz) __builtin___memset_chk (dst, val, sz, bos (dst)) +#define memcpy(dst, src, sz) __builtin___memcpy_chk (dst, src, sz, bos (dst)) +#define memmove(dst, src, sz) __builtin___memmove_chk (dst, src, sz, bos (dst)) +#define strncpy(dst, src, sz) __builtin___strncpy_chk (dst, src, sz, bos (dst)) +#define strncat(dst, src, sz) __builtin___strncat_chk (dst, src, sz, bos (dst)) +#define stpncpy(dst, src, sz) __builtin___stpncpy_chk (dst, src, sz, bos (dst)) + +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]; + +void +f1 (void *x) +{ + 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" } */ + + /* 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)); +} + +void +f2 (void *x) +{ + 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" } */ + + /* 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)); +} + +void +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" } */ + + /* 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)); +} + +void +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" } */ + + 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" } */ + + /* These are correct, no warning. */ + const char s3[] = "foobarbaz"; + const char s4[] = "abcde12345678"; + strncpy (x, s3, sizeof (s3)); + strncat (x, s4, sizeof (s4)); + stpncpy (x, s3, sizeof (s3)); +} + +/* { dg-prune-output "\[\n\r\]*will always overflow\[\n\r\]*" } */ |