1 files changed, 68 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/execute/builtins/mempcpy.c b/gcc/testsuite/gcc.c-torture/execute/builtins/mempcpy.c
new file mode 100644
index 000000000..d82e2232d
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/builtins/mempcpy.c
@@ -0,0 +1,68 @@
+/* Copyright (C) 2003  Free Software Foundation.
+
+   Ensure builtin mempcpy performs correctly.
+
+   Written by Kaveh Ghazi, 4/11/2003.  */
+
+extern void abort (void);
+typedef __SIZE_TYPE__ size_t;
+extern size_t strlen(const char *);
+extern void *memcpy (void *, const void *, size_t);
+extern void *mempcpy (void *, const void *, size_t);
+extern int memcmp (const void *, const void *, size_t);
+extern int inside_main;
+
+const char s1[] = "123";
+char p[32] = "";
+char *s2 = "defg";
+char *s3 = "FGH";
+size_t l1 = 1;
+
+void
+main_test (void)
+{
+  int i;
+
+#if !defined __i386__ && !defined __x86_64__
+  /* The functions below might not be optimized into direct stores on all
+     arches.  It depends on how many instructions would be generated and
+     what limits the architecture chooses in STORE_BY_PIECES_P.  */
+  inside_main = 0;
+#endif
+
+  if (mempcpy (p, "ABCDE", 6) != p + 6 || memcmp (p, "ABCDE", 6))
+    abort ();
+  if (mempcpy (p + 16, "VWX" + 1, 2) != p + 16 + 2
+      || memcmp (p + 16, "WX\0\0", 5))
+    abort ();
+  if (mempcpy (p + 1, "", 1) != p + 1 + 1 || memcmp (p, "A\0CDE", 6))
+    abort ();
+  if (mempcpy (p + 3, "FGHI", 4) != p + 3 + 4 || memcmp (p, "A\0CFGHI", 8))
+    abort ();
+
+  i = 8;
+  memcpy (p + 20, "qrstu", 6);
+  memcpy (p + 25, "QRSTU", 6);
+  if (mempcpy (p + 25 + 1, s1, 3) != (p + 25 + 1 + 3)
+      || memcmp (p + 25, "Q123U", 6))
+    abort ();
+
+  if (mempcpy (mempcpy (p, "abcdEFG", 4), "efg", 4) != p + 8
+      || memcmp (p, "abcdefg", 8))
+    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_mempcpy (p, "ABCDE", 6) != p + 6 || memcmp (p, "ABCDE", 6))
+    abort ();
+
+  /* If the result of mempcpy is ignored, gcc should use memcpy.
+     This should be optimized always, so set inside_main again.  */
+  inside_main = 1;
+  mempcpy (p + 5, s3, 1);
+  if (memcmp (p, "ABCDEFg", 8))
+    abort ();
+  mempcpy (p + 6, s1 + 1, l1);
+  if (memcmp (p, "ABCDEF2", 8))
+    abort ();
+}