1 files changed, 73 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/execute/builtins/strncmp.c b/gcc/testsuite/gcc.c-torture/execute/builtins/strncmp.c
new file mode 100644
index 000000000..2c22b7d01
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/builtins/strncmp.c
@@ -0,0 +1,73 @@
+/* Copyright (C) 2000, 2001, 2003  Free Software Foundation.
+
+   Ensure all expected transformations of builtin strncmp occur and
+   perform correctly.
+
+   Written by Kaveh R. Ghazi, 11/26/2000.  */
+
+extern void abort (void);
+typedef __SIZE_TYPE__ size_t;
+extern int strncmp (const char *, const char *, size_t);
+
+void
+main_test (void)
+{
+  const char *const s1 = "hello world";
+  const char *s2, *s3;
+  
+  if (strncmp (s1, "hello world", 12) != 0)
+    abort();
+  if (strncmp ("hello world", s1, 12) != 0)
+    abort();
+  if (strncmp ("hello", "hello", 6) != 0)
+    abort();
+  if (strncmp ("hello", "hello", 2) != 0)
+    abort();
+  if (strncmp ("hello", "hello", 100) != 0)
+    abort();
+  if (strncmp (s1+10, "d", 100) != 0)
+    abort();
+  if (strncmp (10+s1, "d", 100) != 0)
+    abort();
+  if (strncmp ("d", s1+10, 1) != 0)
+    abort();
+  if (strncmp ("d", 10+s1, 1) != 0)
+    abort();
+  if (strncmp ("hello", "aaaaa", 100) <= 0)
+    abort();
+  if (strncmp ("aaaaa", "hello", 100) >= 0)
+    abort();
+  if (strncmp ("hello", "aaaaa", 1) <= 0)
+    abort();
+  if (strncmp ("aaaaa", "hello", 1) >= 0)
+    abort();
+
+  s2 = s1; s3 = s1+4;
+  if (strncmp (++s2, ++s3, 0) != 0 || s2 != s1+1 || s3 != s1+5)
+    abort();
+  s2 = s1;
+  if (strncmp (++s2, "", 1) <= 0 || s2 != s1+1)
+    abort();
+  if (strncmp ("", ++s2, 1) >= 0 || s2 != s1+2)
+    abort();
+  if (strncmp (++s2, "", 100) <= 0 || s2 != s1+3)
+    abort();
+  if (strncmp ("", ++s2, 100) >= 0 || s2 != s1+4)
+    abort();
+  if (strncmp (++s2+6, "", 100) != 0 || s2 != s1+5)
+    abort();
+  if (strncmp ("", ++s2+5, 100) != 0 || s2 != s1+6)
+    abort();
+  if (strncmp ("ozz", ++s2, 1) != 0 || s2 != s1+7)
+    abort();
+  if (strncmp (++s2, "rzz", 1) != 0 || s2 != s1+8)
+    abort();
+  s2 = s1; s3 = s1+4;
+  if (strncmp (++s2, ++s3+2, 1) >= 0 || s2 != s1+1 || s3 != s1+5)
+    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_strncmp ("hello", "a", 100) <= 0)
+    abort();
+}