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authorUlrich Drepper <drepper@redhat.com>2006-01-10 00:25:07 +0000
committerUlrich Drepper <drepper@redhat.com>2006-01-10 00:25:07 +0000
commitbc795d0b3065b9d03fcbf200ae889047350323df (patch)
treeb508e2df5a57bb0c0e58e78db43ecebf2eb96fc3
parent71ea167b1d3b01e78378b4863d87b5affb5def5f (diff)
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[BZ #2126]
* sysdeps/i386/i686/strtok.S: Store pointer to NUL byte if NULL is returned. * sysdeps/i386/strtok.S: Likewise. * sysdeps/x86_64/strtok.S: Likewise. * string/Makefile (tests): Add bug-strtok1. * string/bug-strtok1.c: New file.
-rw-r--r--ChangeLog8
-rw-r--r--string/Makefile4
-rw-r--r--string/bug-strtok1.c45
-rw-r--r--sysdeps/i386/i686/strtok.S10
-rw-r--r--sysdeps/i386/strtok.S6
-rw-r--r--sysdeps/x86_64/strtok.S4
6 files changed, 70 insertions, 7 deletions
diff --git a/ChangeLog b/ChangeLog
index f74c8b3..66e075f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,13 @@
2006-01-09 Ulrich Drepper <drepper@redhat.com>
+ [BZ #2126]
+ * sysdeps/i386/i686/strtok.S: Store pointer to NUL byte if NULL is
+ returned.
+ * sysdeps/i386/strtok.S: Likewise.
+ * sysdeps/x86_64/strtok.S: Likewise.
+ * string/Makefile (tests): Add bug-strtok1.
+ * string/bug-strtok1.c: New file.
+
* elf/check-textrel.c (AB): Also check for writable and executable
segments.
diff --git a/string/Makefile b/string/Makefile
index 2f37d29..8f9b2ac 100644
--- a/string/Makefile
+++ b/string/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 1991-1999,2000,2001,2002, 2005 Free Software Foundation, Inc.
+# Copyright (C) 1991-2002, 2005, 2006 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
@@ -53,7 +53,7 @@ tests := tester inl-tester noinl-tester testcopy test-ffs \
tst-strlen stratcliff tst-svc tst-inlcall \
bug-strncat1 bug-strspn1 bug-strpbrk1 tst-bswap \
tst-strtok tst-strxfrm bug-strcoll1 tst-strfry \
- $(addprefix test-,$(strop-tests))
+ bug-strtok1 $(addprefix test-,$(strop-tests))
distribute := memcopy.h pagecopy.h tst-svc.expect test-string.h
diff --git a/string/bug-strtok1.c b/string/bug-strtok1.c
new file mode 100644
index 0000000..da30acf
--- /dev/null
+++ b/string/bug-strtok1.c
@@ -0,0 +1,45 @@
+/* See BZ #2126. */
+#include <string.h>
+#include <stdio.h>
+
+static int
+do_test (void)
+{
+ const char str[] = "axaaba";
+ char *token;
+ char *cp;
+ char *l;
+ int result = 0;
+
+ puts ("test strtok");
+ cp = strdupa (str);
+ printf ("cp = %p, len = %zu\n", cp, strlen (cp));
+ token = strtok (cp, "ab");
+ result |= token == NULL || strcmp (token, "x");
+ printf ("token: %s (%d)\n", token ? token : "NULL", result);
+ token = strtok(0, "ab");
+ result |= token != NULL;
+ printf ("token: %s (%d)\n", token ? token : "NULL", result);
+ token = strtok(0, "a");
+ result |= token != NULL;
+ printf ("token: %s (%d)\n", token ? token : "NULL", result);
+
+ puts ("test strtok_r");
+ cp = strdupa (str);
+ size_t len = strlen (cp);
+ printf ("cp = %p, len = %zu\n", cp, len);
+ token = strtok_r (cp, "ab", &l);
+ result |= token == NULL || strcmp (token, "x");
+ printf ("token: %s, next = %p (%d)\n", token ? token : "NULL", l, result);
+ token = strtok_r(0, "ab", &l);
+ result |= token != NULL || l != cp + len;
+ printf ("token: %s, next = %p (%d)\n", token ? token : "NULL", l, result);
+ token = strtok_r(0, "a", &l);
+ result |= token != NULL || l != cp + len;
+ printf ("token: %s, next = %p (%d)\n", token ? token : "NULL", l, result);
+
+ return result;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/sysdeps/i386/i686/strtok.S b/sysdeps/i386/i686/strtok.S
index 0cd266a..fe225e5 100644
--- a/sysdeps/i386/i686/strtok.S
+++ b/sysdeps/i386/i686/strtok.S
@@ -1,6 +1,6 @@
/* strtok (str, delim) -- Return next DELIM separated token from STR.
For Intel 80686.
- Copyright (C) 1998, 2000, 2001, 2005 Free Software Foundation, Inc.
+ Copyright (C) 1998, 2000, 2001, 2005, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
@@ -250,9 +250,9 @@ L(8): cmpl %eax, %edx
cmovne %ecx, %edx
/* Store the pointer to the next character. */
-# ifdef USE_AS_STRTOK_R
+#ifdef USE_AS_STRTOK_R
movl SAVE(%esp), %ecx
-# endif
+#endif
movl %edx, SAVE_PTR
CHECK_BOUNDS_HIGH (%edx, SAVE_PTR, jb)
RETURN_BOUNDED_POINTER (SAVE_PTR)
@@ -271,6 +271,10 @@ L(epilogue):
L(returnNULL):
xorl %eax, %eax
+#ifdef USE_AS_STRTOK_R
+ movl SAVE(%esp), %ecx
+#endif
+ movl %edx, SAVE_PTR
RETURN_NULL_BOUNDED_POINTER
jmp L(epilogue)
diff --git a/sysdeps/i386/strtok.S b/sysdeps/i386/strtok.S
index 88b343b..c5f40a8 100644
--- a/sysdeps/i386/strtok.S
+++ b/sysdeps/i386/strtok.S
@@ -1,6 +1,6 @@
/* strtok (str, delim) -- Return next DELIM separated token from STR.
For Intel 80x86, x>=3.
- Copyright (C) 1996-1998, 2000, 2001, 2005 Free Software Foundation, Inc.
+ Copyright (C) 1996-1998,2000,2001,2005,2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
@@ -385,6 +385,10 @@ L(epilogue):
L(returnNULL):
xorl %eax, %eax
+#ifdef USE_AS_STRTOK_R
+ movl SAVE(%esp), %ecx
+#endif
+ movl %edx, SAVE_PTR
RETURN_NULL_BOUNDED_POINTER
jmp L(epilogue)
diff --git a/sysdeps/x86_64/strtok.S b/sysdeps/x86_64/strtok.S
index de427dc..4037f0b 100644
--- a/sysdeps/x86_64/strtok.S
+++ b/sysdeps/x86_64/strtok.S
@@ -1,6 +1,6 @@
/* strtok (str, delim) -- Return next DELIM separated token from STR.
For AMD x86-64.
- Copyright (C) 1998,2000,2001,2002,2003,2005 Free Software Foundation, Inc.
+ Copyright (C) 1998,2000-2003,2005,2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Based on i686 version contributed by Ulrich Drepper
<drepper@cygnus.com>, 1998.
@@ -205,6 +205,8 @@ L(epilogue):
L(returnNULL):
xorl %eax, %eax
+ /* Store the pointer to the next character. */
+ movq %rdx, SAVE_PTR
jmp L(epilogue)
END (BP_SYM (FUNCTION))