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diff --git a/gcc/testsuite/gcc.c-torture/execute/builtins/strlen.c b/gcc/testsuite/gcc.c-torture/execute/builtins/strlen.c
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+/* Copyright (C) 2000, 2001, 2003, 2004 Free Software Foundation.
+
+ Ensure all expected transformations of builtin strlen
+ occur and perform correctly.
+
+ Written by Jakub Jelinek, 11/7/2000.
+
+ Additional tests written by Roger Sayle, 11/02/2001:
+ Ensure all builtin strlen comparisons against zero are optimized
+ and perform correctly. The multiple calls to strcpy are to prevent
+ the potentially "pure" strlen calls from being removed by CSE.
+
+ Modified by Ben Elliston, 2006-10-25:
+ The multiple calls to strcpy that Roger mentions above are
+ problematic on systems where strcpy is implemented using strlen
+ (which this test overrides to call abort). So, rather than use
+ strcpy, we perform the identical operations using array indexing
+ and char assignments. */
+
+extern void abort (void);
+extern __SIZE_TYPE__ strlen (const char *);
+extern char *strcpy (char *, const char *);
+
+int x = 6;
+
+void
+main_test(void)
+{
+ const char *const foo = "hello world";
+ char str[8];
+ char *ptr;
+
+ if (strlen (foo) != 11)
+ abort ();
+ if (strlen (foo + 4) != 7)
+ abort ();
+ if (strlen (foo + (x++ & 7)) != 5)
+ abort ();
+ if (x != 7)
+ abort ();
+
+ ptr = str;
+ ptr[0] = 'n'; ptr[1] = 't'; ptr[2] = 's'; ptr[3] = '\0';
+ if (strlen (ptr) == 0)
+ abort ();
+
+ ptr[0] = 'n'; ptr[1] = 't'; ptr[2] = 's'; ptr[3] = '\0';
+ if (strlen (ptr) < 1)
+ abort ();
+
+ ptr[0] = 'n'; ptr[1] = 't'; ptr[2] = 's'; ptr[3] = '\0';
+ if (strlen (ptr) <= 0)
+ abort ();
+
+ ptr[0] = 'n'; ptr[1] = 't'; ptr[2] = 's'; ptr[3] = '\0';
+ if (strlen (ptr+3) != 0)
+ abort ();
+
+ ptr[0] = 'n'; ptr[1] = 't'; ptr[2] = 's'; ptr[3] = '\0';
+ if (strlen (ptr+3) > 0)
+ abort ();
+
+ ptr[0] = 'n'; ptr[1] = 't'; ptr[2] = 's'; ptr[3] = '\0';
+ if (strlen (str+3) >= 1)
+ abort ();
+
+ /* Test at least one instance of the __builtin_ style. We do this
+ to ensure that it works and that the prototype is correct. */
+ if (__builtin_strlen (foo) != 11)
+ abort ();
+}