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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/testsuite/gcc.c-torture/execute/strlen-1.c
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Diffstat (limited to 'gcc/testsuite/gcc.c-torture/execute/strlen-1.c')
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diff --git a/gcc/testsuite/gcc.c-torture/execute/strlen-1.c b/gcc/testsuite/gcc.c-torture/execute/strlen-1.c
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+/* Copyright (C) 2002 Free Software Foundation.
+
+ Test strlen with various combinations of pointer alignments and lengths to
+ make sure any optimizations in the library are correct.
+
+ Written by Michael Meissner, March 9, 2002. */
+
+#include <string.h>
+#include <stddef.h>
+
+#ifndef MAX_OFFSET
+#define MAX_OFFSET (sizeof (long long))
+#endif
+
+#ifndef MAX_TEST
+#define MAX_TEST (8 * sizeof (long long))
+#endif
+
+#ifndef MAX_EXTRA
+#define MAX_EXTRA (sizeof (long long))
+#endif
+
+#define MAX_LENGTH (MAX_OFFSET + MAX_TEST + MAX_EXTRA + 1)
+
+static union {
+ char buf[MAX_LENGTH];
+ long long align_int;
+ long double align_fp;
+} u;
+
+main ()
+{
+ size_t off, len, len2, i;
+ char *p;
+
+ for (off = 0; off < MAX_OFFSET; off++)
+ for (len = 0; len < MAX_TEST; len++)
+ {
+ p = u.buf;
+ for (i = 0; i < off; i++)
+ *p++ = '\0';
+
+ for (i = 0; i < len; i++)
+ *p++ = 'a';
+
+ *p++ = '\0';
+ for (i = 0; i < MAX_EXTRA; i++)
+ *p++ = 'b';
+
+ p = u.buf + off;
+ len2 = strlen (p);
+ if (len != len2)
+ abort ();
+ }
+
+ exit (0);
+}