X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=tests%2Ftest-rawmemchr.c;h=9e31500ec82db337bfaa09155d626b7363090b06;hb=74a0def25839a0c6934ca611e605694840877140;hp=180c2b08ae409f0cc63fe0ee88ef8e437f1bbb65;hpb=987e5651e8d1c5aa933c9ce88562806af4093702;p=gnulib.git

diff --git a/tests/test-rawmemchr.c b/tests/test-rawmemchr.c
index 180c2b08a..9e31500ec 100644
--- a/tests/test-rawmemchr.c
+++ b/tests/test-rawmemchr.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2008, 2009 Free Software Foundation
+ * Copyright (C) 2008-2012 Free Software Foundation, Inc.
  * Written by Eric Blake and Bruno Haible
  *
  * This program is free software: you can redistribute it and/or modify
@@ -24,6 +24,7 @@ SIGNATURE_CHECK (rawmemchr, void *, (void const *, int));
 
 #include <stdlib.h>
 
+#include "zerosize-ptr.h"
 #include "macros.h"
 
 /* Calculating void * + int is not portable, so this wrapper converts
@@ -53,6 +54,7 @@ main (void)
 
   ASSERT (RAWMEMCHR (input + 1, 'a') == input + n - 1);
   ASSERT (RAWMEMCHR (input + 1, 'e') == input + n - 2);
+  ASSERT (RAWMEMCHR (input + 1, 0x789abc00 | 'e') == input + n - 2);
 
   ASSERT (RAWMEMCHR (input, '\0') == input + n);
 
@@ -70,6 +72,20 @@ main (void)
       }
   }
 
+  /* Ensure that no unaligned oversized reads occur.  */
+  {
+    char *page_boundary = (char *) zerosize_ptr ();
+    size_t i;
+
+    if (!page_boundary)
+      page_boundary = input + 4096;
+    memset (page_boundary - 512, '1', 511);
+    page_boundary[-1] = '2';
+    for (i = 1; i <= 512; i++)
+      ASSERT (RAWMEMCHR (page_boundary - i, (i * 0x01010100) | '2')
+              == page_boundary - 1);
+  }
+
   free (input);
 
   return 0;