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* gcc.c-torture/execute/builtins/strcat.c: Check the result buffer past the terminating NUL using memcmp. * gcc.c-torture/execute/builtins/strncat.c: Likewise. * gcc.c-torture/execute/builtins/strncpy.c: Likewise. From-SVN: r97388
82 lines
2.5 KiB
C
82 lines
2.5 KiB
C
/* Copyright (C) 2000, 2003 Free Software Foundation.
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Ensure all expected transformations of builtin strcat occur and
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perform correctly.
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Written by Kaveh R. Ghazi, 11/27/2000. */
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extern int inside_main;
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extern void abort (void);
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typedef __SIZE_TYPE__ size_t;
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extern char *strcat (char *, const char *);
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extern char *strcpy (char *, const char *);
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extern void *memset (void *, int, size_t);
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extern int memcmp (const void *, const void *, size_t);
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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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void main_test (void)
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{
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const char *const s1 = "hello world";
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const char *const s2 = "";
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char dst[64], *d2;
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RESET_DST_WITH (s1);
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if (strcat (dst, "") != dst || memcmp (dst, "hello world\0XXX", 15))
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abort();
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RESET_DST_WITH (s1);
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if (strcat (dst, s2) != dst || memcmp (dst, "hello world\0XXX", 15))
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abort();
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RESET_DST_WITH (s1); d2 = dst;
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if (strcat (++d2, s2) != dst+1 || d2 != dst+1
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|| memcmp (dst, "hello world\0XXX", 15))
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abort();
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RESET_DST_WITH (s1); d2 = dst;
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if (strcat (++d2+5, s2) != dst+6 || d2 != dst+1
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|| memcmp (dst, "hello world\0XXX", 15))
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abort();
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RESET_DST_WITH (s1); d2 = dst;
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if (strcat (++d2+5, s1+11) != dst+6 || d2 != dst+1
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|| memcmp (dst, "hello world\0XXX", 15))
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abort();
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#ifndef __OPTIMIZE_SIZE__
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# if !defined __i386__ && !defined __x86_64__
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/* The functions below might not be optimized into direct stores on all
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arches. It depends on how many instructions would be generated and
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what limits the architecture chooses in STORE_BY_PIECES_P. */
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inside_main = 0;
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# endif
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RESET_DST_WITH (s1);
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if (strcat (dst, " 1111") != dst
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|| memcmp (dst, "hello world 1111\0XXX", 20))
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abort();
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RESET_DST_WITH (s1);
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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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abort();
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RESET_DST_WITH (s1); d2 = dst;
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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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abort();
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RESET_DST_WITH (s1);
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strcat (strcat (strcat (strcat (strcat (strcat (dst, ": this "), ""),
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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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abort();
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/* Set inside_main again. */
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inside_main = 1;
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#endif
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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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RESET_DST_WITH (s1);
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if (__builtin_strcat (dst, "") != dst || memcmp (dst, "hello world\0XXX", 15))
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abort();
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}
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