From 8187b0ccda766ff2000e954f01ba918faefc05d2 Mon Sep 17 00:00:00 2001
From: Eric Andersen <andersen@codepoet.org>
Date: Thu, 5 Oct 2000 05:10:27 +0000
Subject: Major update to string handling.  strcmp and friends were horribly
 broken.  They now test out as working properly.  -Erik

---
 test/string/Makefile   |  21 ++++++++++
 test/string/testcopy.c | 108 +++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 129 insertions(+)
 create mode 100644 test/string/testcopy.c

(limited to 'test/string')

diff --git a/test/string/Makefile b/test/string/Makefile
index b3021e0fc..5384c9dec 100644
--- a/test/string/Makefile
+++ b/test/string/Makefile
@@ -20,6 +20,7 @@ endif
 STRIP    = $(STRIPTOOL) --remove-section=.note --remove-section=.comment $@
 
 TARGETS=string string_glibc
+TARGETS+=testcopy testcopy_glibc
 
 all: $(TARGETS)
 
@@ -43,6 +44,26 @@ string_glibc: string.c Makefile $(TOPDIR)libc.a
 	-./$@
 	-@ echo " "
 
+testcopy: testcopy.c Makefile $(TOPDIR)libc.a
+	-@ echo "-------"
+	-@ echo " "
+	-@ echo "Compiling vs uCLibc: "
+	-@ echo " "
+	$(CC) $(XCFLAGS) -c $< -o $@.o
+	$(CC) $(XLDFLAGS) $@.o -o $@ $(EXTRA_LIBS)
+	-./$@
+	-@ echo " "
+
+testcopy_glibc: testcopy.c Makefile $(TOPDIR)libc.a
+	-@ echo "-------"
+	-@ echo " "
+	-@ echo "Compiling vs GNU libc: "
+	-@ echo " "
+	$(CC) $(YCFLAGS) -c $< -o $@.o
+	$(CC) $(YLDFLAGS) --static $@.o -o $@
+	-./$@
+	-@ echo " "
+
 clean:
 	rm -f *.[oa] *~ core $(TARGETS)
 
diff --git a/test/string/testcopy.c b/test/string/testcopy.c
new file mode 100644
index 000000000..02d193779
--- /dev/null
+++ b/test/string/testcopy.c
@@ -0,0 +1,108 @@
+/* Copyright (C) 1990, 1991, 1992 Free Software Foundation, Inc.
+   Contributed by Torbjorn Granlund (tege@sics.se).
+
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <malloc.h>
+
+int main(int argc, char **argv)
+{
+  char *mem, *memp;
+  char *rand_mem;
+  char *lo_around, *hi_around;
+  int size, max_size;
+  int src_off, dst_off;
+  int i;
+  int space_around = 10;
+
+  max_size = 256;
+
+  mem = malloc (max_size + 2 * max_size + 2 * space_around);
+  rand_mem = malloc (max_size);
+  lo_around = malloc (space_around);
+  hi_around = malloc (space_around);
+  memp = mem + space_around;
+
+  /* Fill RAND_MEM with random bytes, each non-zero.  */
+  for (i = 0; i < max_size; i++)
+    {
+      int x;
+      do
+	x = rand ();
+      while (x == 0);
+      rand_mem[i] = x;
+    }
+
+  for (size = 0; size < max_size; size++)
+    {
+      printf("phase %d\n", size);
+      for (src_off = 0; src_off <= 16; src_off++)
+	{
+	  for (dst_off = 0; dst_off <= 16; dst_off++)
+	    {
+	      /* Put zero around the intended destination, to check
+		 that it's not clobbered.  */
+	      for (i = 1; i < space_around; i++)
+		{
+		  memp[dst_off - i] = 0;
+		  memp[dst_off + size - 1 + i] = 0;
+		}
+
+	      /* Fill the source area with known contents.  */
+	      for (i = 0; i < size; i++)
+		memp[src_off + i] = rand_mem[i];
+
+	      /* Remember the contents around the destination area.
+		 (It might not be what we wrote some lines above, since
+		 the src area and the dst area overlap.)  */
+	      for (i = 1; i < space_around; i++)
+		{
+		  lo_around[i] = memp[dst_off - i];
+		  hi_around[i] = memp[dst_off + size - 1 + i];
+		}
+
+	      memmove (memp + dst_off, memp + src_off, size);
+
+	      /* Check that the destination area has the same
+		 contents we wrote to the source area.  */
+	      for (i = 0; i < size; i++)
+		{
+		  if (memp[dst_off + i] != rand_mem[i])
+		    abort ();
+		}
+
+	      /* Check that the area around the destination is not
+		 clobbered.  */
+	      for (i = 1; i < space_around; i++)
+		{
+		  if (memp[dst_off - i] != lo_around[i])
+		    abort ();
+		  if (memp[dst_off + size - 1 + i] != hi_around[i])
+		    abort ();
+		}
+	    }
+	}
+    }
+
+  puts ("Test succeeded.");
+
+  return 0;
+}
-- 
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