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 char *strchr(const char *, int);
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extern char *strchr(const char *, int);
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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 int strncmp(const char *, const char *, size_t);
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extern int strncmp(const char *, const char *, size_t);
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extern int inside_main;
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extern int inside_main;
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extern const char *p;
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extern const char *p;
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char *
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char *
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my_strstr (const char *s1, const char *s2)
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my_strstr (const char *s1, const char *s2)
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{
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{
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const size_t len = strlen (s2);
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const size_t len = strlen (s2);
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#ifdef __OPTIMIZE__
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#ifdef __OPTIMIZE__
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/* If optimizing, we should be called only in the strstr (foo + 2, p)
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/* If optimizing, we should be called only in the strstr (foo + 2, p)
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case. All other cases should be optimized. */
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case. All other cases should be optimized. */
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if (inside_main)
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if (inside_main)
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if (s2 != p || strcmp (s1, "hello world" + 2) != 0)
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if (s2 != p || strcmp (s1, "hello world" + 2) != 0)
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abort ();
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abort ();
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#endif
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#endif
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if (len == 0)
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if (len == 0)
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return (char *) s1;
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return (char *) s1;
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for (s1 = strchr (s1, *s2); s1; s1 = strchr (s1 + 1, *s2))
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for (s1 = strchr (s1, *s2); s1; s1 = strchr (s1 + 1, *s2))
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if (strncmp (s1, s2, len) == 0)
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if (strncmp (s1, s2, len) == 0)
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return (char *) s1;
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return (char *) s1;
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return (char *) 0;
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return (char *) 0;
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}
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}
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char *
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char *
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strstr (const char *s1, const char *s2)
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strstr (const char *s1, const char *s2)
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{
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{
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if (inside_main)
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if (inside_main)
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abort ();
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abort ();
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return my_strstr (s1, s2);
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return my_strstr (s1, s2);
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}
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}
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