/* Copyright (C) 2004, 2005 Free Software Foundation.
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/* Copyright (C) 2004, 2005 Free Software Foundation.
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Ensure builtin __strcat_chk performs correctly. */
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Ensure builtin __strcat_chk performs correctly. */
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extern void abort (void);
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extern void abort (void);
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typedef __SIZE_TYPE__ size_t;
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typedef __SIZE_TYPE__ size_t;
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extern size_t strlen(const char *);
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extern size_t strlen(const char *);
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extern void *memcpy (void *, const void *, size_t);
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extern void *memcpy (void *, const void *, size_t);
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extern char *strcat (char *, const char *);
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extern char *strcat (char *, const char *);
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extern int memcmp (const void *, const void *, size_t);
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extern int memcmp (const void *, const void *, size_t);
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extern char *strcpy (char *, const char *);
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extern char *strcpy (char *, const char *);
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extern int strcmp (const char *, const char *);
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extern int strcmp (const char *, const char *);
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extern void *memset (void *, int, size_t);
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extern void *memset (void *, int, size_t);
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#define RESET_DST_WITH(FILLER) \
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#define RESET_DST_WITH(FILLER) \
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do { memset (dst, 'X', sizeof (dst)); strcpy (dst, (FILLER)); } while (0)
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do { memset (dst, 'X', sizeof (dst)); strcpy (dst, (FILLER)); } while (0)
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#include "chk.h"
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#include "chk.h"
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const char s1[] = "123";
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const char s1[] = "123";
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char p[32] = "";
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char p[32] = "";
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char *s2 = "defg";
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char *s2 = "defg";
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char *s3 = "FGH";
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char *s3 = "FGH";
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char *s4;
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char *s4;
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size_t l1 = 1;
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size_t l1 = 1;
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char *s5;
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char *s5;
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void
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void
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__attribute__((noinline))
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__attribute__((noinline))
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test1 (void)
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test1 (void)
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{
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{
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const char *const x1 = "hello world";
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const char *const x1 = "hello world";
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const char *const x2 = "";
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const char *const x2 = "";
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char dst[64], *d2;
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char dst[64], *d2;
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chk_calls = 0;
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chk_calls = 0;
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strcat_disallowed = 1;
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strcat_disallowed = 1;
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/* Following strcat calls should be optimized out at compile time. */
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/* Following strcat calls should be optimized out at compile time. */
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RESET_DST_WITH (x1);
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RESET_DST_WITH (x1);
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if (strcat (dst, "") != dst || strcmp (dst, x1))
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if (strcat (dst, "") != dst || strcmp (dst, x1))
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abort ();
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abort ();
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RESET_DST_WITH (x1);
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RESET_DST_WITH (x1);
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if (strcat (dst, x2) != dst || strcmp (dst, x1))
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if (strcat (dst, x2) != dst || strcmp (dst, x1))
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abort ();
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abort ();
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RESET_DST_WITH (x1); d2 = dst;
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RESET_DST_WITH (x1); d2 = dst;
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if (strcat (++d2, x2) != dst+1 || d2 != dst+1 || strcmp (dst, x1))
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if (strcat (++d2, x2) != dst+1 || d2 != dst+1 || strcmp (dst, x1))
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abort ();
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abort ();
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RESET_DST_WITH (x1); d2 = dst;
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RESET_DST_WITH (x1); d2 = dst;
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if (strcat (++d2+5, x2) != dst+6 || d2 != dst+1 || strcmp (dst, x1))
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if (strcat (++d2+5, x2) != dst+6 || d2 != dst+1 || strcmp (dst, x1))
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abort ();
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abort ();
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RESET_DST_WITH (x1); d2 = dst;
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RESET_DST_WITH (x1); d2 = dst;
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if (strcat (++d2+5, x1+11) != dst+6 || d2 != dst+1 || strcmp (dst, x1))
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if (strcat (++d2+5, x1+11) != dst+6 || d2 != dst+1 || strcmp (dst, x1))
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abort ();
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abort ();
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if (chk_calls)
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if (chk_calls)
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abort ();
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abort ();
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strcat_disallowed = 0;
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strcat_disallowed = 0;
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RESET_DST_WITH (x1);
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RESET_DST_WITH (x1);
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if (strcat (dst, " 1111") != dst
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if (strcat (dst, " 1111") != dst
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|| memcmp (dst, "hello world 1111\0XXX", 20))
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|| memcmp (dst, "hello world 1111\0XXX", 20))
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abort ();
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abort ();
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RESET_DST_WITH (x1);
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RESET_DST_WITH (x1);
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if (strcat (dst+5, " 2222") != dst+5
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if (strcat (dst+5, " 2222") != dst+5
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|| memcmp (dst, "hello world 2222\0XXX", 20))
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|| memcmp (dst, "hello world 2222\0XXX", 20))
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abort ();
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abort ();
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RESET_DST_WITH (x1); d2 = dst;
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RESET_DST_WITH (x1); d2 = dst;
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if (strcat (++d2+5, " 3333") != dst+6 || d2 != dst+1
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if (strcat (++d2+5, " 3333") != dst+6 || d2 != dst+1
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|| memcmp (dst, "hello world 3333\0XXX", 20))
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|| memcmp (dst, "hello world 3333\0XXX", 20))
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abort ();
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abort ();
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RESET_DST_WITH (x1);
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RESET_DST_WITH (x1);
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strcat (strcat (strcat (strcat (strcat (strcat (dst, ": this "), ""),
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strcat (strcat (strcat (strcat (strcat (strcat (dst, ": this "), ""),
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"is "), "a "), "test"), ".");
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"is "), "a "), "test"), ".");
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if (memcmp (dst, "hello world: this is a test.\0X", 30))
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if (memcmp (dst, "hello world: this is a test.\0X", 30))
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abort ();
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abort ();
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chk_calls = 0;
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chk_calls = 0;
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strcat_disallowed = 1;
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strcat_disallowed = 1;
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/* Test at least one instance of the __builtin_ style. We do this
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/* Test at least one instance of the __builtin_ style. We do this
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to ensure that it works and that the prototype is correct. */
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to ensure that it works and that the prototype is correct. */
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RESET_DST_WITH (x1);
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RESET_DST_WITH (x1);
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if (__builtin_strcat (dst, "") != dst || strcmp (dst, x1))
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if (__builtin_strcat (dst, "") != dst || strcmp (dst, x1))
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abort ();
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abort ();
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if (chk_calls)
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if (chk_calls)
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abort ();
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abort ();
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strcat_disallowed = 0;
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strcat_disallowed = 0;
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}
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}
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/* Test whether compile time checking is done where it should
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/* Test whether compile time checking is done where it should
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and so is runtime object size checking. */
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and so is runtime object size checking. */
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void
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void
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__attribute__((noinline))
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__attribute__((noinline))
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test2 (void)
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test2 (void)
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{
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{
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struct A { char buf1[10]; char buf2[10]; } a;
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struct A { char buf1[10]; char buf2[10]; } a;
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char *r = l1 == 1 ? &a.buf1[5] : &a.buf2[4];
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char *r = l1 == 1 ? &a.buf1[5] : &a.buf2[4];
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char buf3[20];
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char buf3[20];
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int i;
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int i;
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/* The following calls should do runtime checking
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/* The following calls should do runtime checking
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- source length is not known, but destination is. */
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- source length is not known, but destination is. */
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memset (&a, '\0', sizeof (a));
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memset (&a, '\0', sizeof (a));
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s5 = (char *) &a;
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s5 = (char *) &a;
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__asm __volatile ("" : : "r" (s5) : "memory");
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__asm __volatile ("" : : "r" (s5) : "memory");
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chk_calls = 0;
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chk_calls = 0;
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strcat (a.buf1 + 2, s3 + 3);
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strcat (a.buf1 + 2, s3 + 3);
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strcat (r, s3 + 2);
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strcat (r, s3 + 2);
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r = l1 == 1 ? __builtin_alloca (4) : &a.buf2[7];
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r = l1 == 1 ? __builtin_alloca (4) : &a.buf2[7];
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memset (r, '\0', 3);
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memset (r, '\0', 3);
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__asm __volatile ("" : : "r" (r) : "memory");
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__asm __volatile ("" : : "r" (r) : "memory");
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strcat (r, s2 + 2);
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strcat (r, s2 + 2);
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strcat (r + 2, s3 + 3);
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strcat (r + 2, s3 + 3);
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r = buf3;
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r = buf3;
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for (i = 0; i < 4; ++i)
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for (i = 0; i < 4; ++i)
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{
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{
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if (i == l1 - 1)
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if (i == l1 - 1)
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r = &a.buf1[1];
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r = &a.buf1[1];
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else if (i == l1)
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else if (i == l1)
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r = &a.buf2[7];
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r = &a.buf2[7];
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else if (i == l1 + 1)
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else if (i == l1 + 1)
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r = &buf3[5];
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r = &buf3[5];
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else if (i == l1 + 2)
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else if (i == l1 + 2)
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r = &a.buf1[9];
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r = &a.buf1[9];
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}
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}
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strcat (r, s2 + 4);
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strcat (r, s2 + 4);
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if (chk_calls != 5)
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if (chk_calls != 5)
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abort ();
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abort ();
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/* Following have known destination and known source length,
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/* Following have known destination and known source length,
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but we don't know the length of dest string, so runtime checking
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but we don't know the length of dest string, so runtime checking
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is needed too. */
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is needed too. */
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memset (&a, '\0', sizeof (a));
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memset (&a, '\0', sizeof (a));
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chk_calls = 0;
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chk_calls = 0;
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s5 = (char *) &a;
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s5 = (char *) &a;
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__asm __volatile ("" : : "r" (s5) : "memory");
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__asm __volatile ("" : : "r" (s5) : "memory");
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strcat (a.buf1 + 2, "a");
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strcat (a.buf1 + 2, "a");
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strcat (r, "");
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strcat (r, "");
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r = l1 == 1 ? __builtin_alloca (4) : &a.buf2[7];
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r = l1 == 1 ? __builtin_alloca (4) : &a.buf2[7];
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memset (r, '\0', 3);
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memset (r, '\0', 3);
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__asm __volatile ("" : : "r" (r) : "memory");
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__asm __volatile ("" : : "r" (r) : "memory");
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strcat (r, s1 + 1);
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strcat (r, s1 + 1);
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if (chk_calls != 2)
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if (chk_calls != 2)
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abort ();
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abort ();
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chk_calls = 0;
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chk_calls = 0;
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/* Unknown destination and source, no checking. */
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/* Unknown destination and source, no checking. */
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strcat (s4, s3);
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strcat (s4, s3);
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if (chk_calls)
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if (chk_calls)
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abort ();
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abort ();
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chk_calls = 0;
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chk_calls = 0;
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}
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}
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/* Test whether runtime and/or compile time checking catches
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/* Test whether runtime and/or compile time checking catches
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buffer overflows. */
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buffer overflows. */
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void
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void
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__attribute__((noinline))
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__attribute__((noinline))
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test3 (void)
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test3 (void)
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{
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{
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struct A { char buf1[10]; char buf2[10]; } a;
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struct A { char buf1[10]; char buf2[10]; } a;
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char buf3[20];
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char buf3[20];
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memset (&a, '\0', sizeof (a));
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memset (&a, '\0', sizeof (a));
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memset (buf3, '\0', sizeof (buf3));
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memset (buf3, '\0', sizeof (buf3));
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s5 = (char *) &a;
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s5 = (char *) &a;
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__asm __volatile ("" : : "r" (s5) : "memory");
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__asm __volatile ("" : : "r" (s5) : "memory");
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s5 = buf3;
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s5 = buf3;
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__asm __volatile ("" : : "r" (s5) : "memory");
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__asm __volatile ("" : : "r" (s5) : "memory");
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chk_fail_allowed = 1;
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chk_fail_allowed = 1;
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/* Runtime checks. */
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/* Runtime checks. */
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if (__builtin_setjmp (chk_fail_buf) == 0)
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if (__builtin_setjmp (chk_fail_buf) == 0)
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{
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{
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strcat (&a.buf2[9], s2 + 3);
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strcat (&a.buf2[9], s2 + 3);
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abort ();
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abort ();
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}
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}
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if (__builtin_setjmp (chk_fail_buf) == 0)
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if (__builtin_setjmp (chk_fail_buf) == 0)
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{
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{
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strcat (&a.buf2[7], s3 + strlen (s3) - 3);
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strcat (&a.buf2[7], s3 + strlen (s3) - 3);
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abort ();
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abort ();
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}
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}
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if (__builtin_setjmp (chk_fail_buf) == 0)
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if (__builtin_setjmp (chk_fail_buf) == 0)
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{
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{
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strcat (&buf3[19], "a");
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strcat (&buf3[19], "a");
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abort ();
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abort ();
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}
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}
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chk_fail_allowed = 0;
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chk_fail_allowed = 0;
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}
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}
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void
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void
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main_test (void)
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main_test (void)
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{
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{
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#ifndef __OPTIMIZE__
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#ifndef __OPTIMIZE__
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/* Object size checking is only intended for -O[s123]. */
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/* Object size checking is only intended for -O[s123]. */
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return;
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return;
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#endif
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#endif
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__asm ("" : "=r" (s2) : "0" (s2));
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__asm ("" : "=r" (s2) : "0" (s2));
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__asm ("" : "=r" (s3) : "0" (s3));
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__asm ("" : "=r" (s3) : "0" (s3));
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__asm ("" : "=r" (l1) : "0" (l1));
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__asm ("" : "=r" (l1) : "0" (l1));
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s4 = p;
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s4 = p;
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test1 ();
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test1 ();
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memset (p, '\0', sizeof (p));
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memset (p, '\0', sizeof (p));
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test2 ();
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test2 ();
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test3 ();
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test3 ();
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}
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}
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