/* Copyright (C) 2000, 2001, 2003, 2004 Free Software Foundation.
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/* Copyright (C) 2000, 2001, 2003, 2004 Free Software Foundation.
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Ensure all expected transformations of builtin strlen
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Ensure all expected transformations of builtin strlen
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occur and perform correctly.
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occur and perform correctly.
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Written by Jakub Jelinek, 11/7/2000.
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Written by Jakub Jelinek, 11/7/2000.
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Additional tests written by Roger Sayle, 11/02/2001:
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Additional tests written by Roger Sayle, 11/02/2001:
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Ensure all builtin strlen comparisons against zero are optimized
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Ensure all builtin strlen comparisons against zero are optimized
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and perform correctly. The multiple calls to strcpy are to prevent
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and perform correctly. The multiple calls to strcpy are to prevent
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the potentially "pure" strlen calls from being removed by CSE. */
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the potentially "pure" strlen calls from being removed by CSE. */
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extern void abort (void);
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extern void abort (void);
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extern __SIZE_TYPE__ strlen (const char *);
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extern __SIZE_TYPE__ strlen (const char *);
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extern char *strcpy (char *, const char *);
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extern char *strcpy (char *, const char *);
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int x = 6;
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int x = 6;
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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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const char *const foo = "hello world";
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const char *const foo = "hello world";
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char str[8];
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char str[8];
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char *ptr;
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char *ptr;
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if (strlen (foo) != 11)
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if (strlen (foo) != 11)
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abort ();
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abort ();
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if (strlen (foo + 4) != 7)
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if (strlen (foo + 4) != 7)
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abort ();
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abort ();
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if (strlen (foo + (x++ & 7)) != 5)
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if (strlen (foo + (x++ & 7)) != 5)
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abort ();
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abort ();
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if (x != 7)
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if (x != 7)
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abort ();
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abort ();
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ptr = str;
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ptr = str;
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strcpy (ptr, "nts");
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strcpy (ptr, "nts");
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if (strlen (ptr) == 0)
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if (strlen (ptr) == 0)
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abort ();
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abort ();
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strcpy (ptr, "nts");
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strcpy (ptr, "nts");
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if (strlen (ptr) < 1)
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if (strlen (ptr) < 1)
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abort ();
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abort ();
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strcpy (ptr, "nts");
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strcpy (ptr, "nts");
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if (strlen (ptr) <= 0)
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if (strlen (ptr) <= 0)
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abort ();
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abort ();
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strcpy (ptr, "nts");
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strcpy (ptr, "nts");
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if (strlen (ptr+3) != 0)
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if (strlen (ptr+3) != 0)
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abort ();
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abort ();
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strcpy (ptr, "nts");
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strcpy (ptr, "nts");
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if (strlen (ptr+3) > 0)
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if (strlen (ptr+3) > 0)
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abort ();
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abort ();
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strcpy (ptr, "nts");
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strcpy (ptr, "nts");
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if (strlen (str+3) >= 1)
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if (strlen (str+3) >= 1)
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abort ();
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abort ();
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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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if (__builtin_strlen (foo) != 11)
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if (__builtin_strlen (foo) != 11)
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abort ();
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abort ();
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}
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}
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