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Adhemerval Zanella 3daef2c8ee Fix x86_64 memchr for large input sizes 
Current optimized memchr for x86_64 does for input arguments pointers
module 64 in range of [49,63] if there is no searchr char in the rest
of 64-byte block a pointer addition which might overflow:

* sysdeps/x86_64/memchr.S

    77          .p2align 4
    78  L(unaligned_no_match):
    79          add     %rcx, %rdx

Add (uintptr_t)s % 16 to n in %rdx.

    80          sub     $16, %rdx
    81          jbe     L(return_null)

This patch fixes by adding a saturated math that sets a maximum pointer
value if it overflows (UINTPTR_MAX).

Checked on x86_64-linux-gnu and powerpc64-linux-gnu.

	[BZ# 19387]
	* sysdeps/x86_64/memchr.S (memchr): Avoid overflow in pointer
	addition.
	* string/test-memchr.c (do_test): Remove alignment limitation.
	(test_main): Add test that trigger BZ# 19387.
2016-12-27 10:50:41 -02:00
..
bits
This patch cleans up the strsep implementation and improves performance.
2016-12-21 15:16:29 +00:00
_strerror.c
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2016-01-04 16:05:18 +00:00
argz-addsep.c
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argz-append.c
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argz-count.c
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argz-create.c
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argz-ctsep.c
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argz-delete.c
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argz-extract.c
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argz-insert.c
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argz-next.c
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argz-replace.c
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argz-stringify.c
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argz.h
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basename.c
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bcopy.c
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2016-01-04 16:05:18 +00:00
bug-envz1.c
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bug-strcoll1.c
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bug-strcoll2.c
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2016-01-04 16:05:18 +00:00
bug-strncat1.c
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bug-strpbrk1.c
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bug-strspn1.c
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bug-strtok1.c
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byteswap.h
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2016-01-04 16:05:18 +00:00
bzero.c
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Depend
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endian.h
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envz.c
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2016-01-04 16:05:18 +00:00
envz.h
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2016-01-04 16:05:18 +00:00
explicit_bzero.c
New string function explicit_bzero (from OpenBSD).
2016-12-16 16:21:54 -05:00
ffs.c
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ffsll.c
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inl-tester.c
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Makefile
Disable stack protector in early static initialization [BZ #7065]
2016-12-26 10:08:45 +01:00
memccpy.c
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2016-01-04 16:05:18 +00:00
memchr.c
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memcmp.c
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memcpy.c
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memfrob.c
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memmem.c
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memmove.c
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memory.h
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mempcpy.c
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memrchr.c
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memset.c
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2016-01-04 16:05:18 +00:00
noinl-tester.c
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rawmemchr.c
Improve generic rawmemchr for targets that don't have an
2016-12-14 13:16:13 +00:00
stpcpy.c
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stpncpy.c
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str-two-way.h
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stratcliff.c
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strcasecmp_l.c
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strcasecmp.c
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strcasestr.c
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strcat.c
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strchr.c
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strchrnul.c
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2016-01-04 16:05:18 +00:00
strcmp.c
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2016-01-04 16:05:18 +00:00
strcoll_l.c
Bug 20729: Fix building with -Os.
2016-10-29 23:50:56 -04:00
strcoll.c
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2016-01-04 16:05:18 +00:00
strcpy.c
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strcspn.c
Use PTR_ALIGN_DOWN on strcspn and strspn
2016-04-01 18:33:03 -03:00
strdup.c
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strerror_l.c
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strerror.c
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strfry.c
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2016-01-04 16:05:18 +00:00
string-inlines.c
This patch cleans up the strsep implementation and improves performance.
2016-12-21 15:16:29 +00:00
string.h
New string function explicit_bzero (from OpenBSD).
2016-12-16 16:21:54 -05:00
strings.h
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strlen.c
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strncase_l.c
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strncase.c
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strncat.c
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strncmp.c
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strncpy.c
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strndup.c
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2016-01-04 16:05:18 +00:00
strnlen.c
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strpbrk.c
Improve generic strpbrk performance
2016-04-01 10:44:45 -03:00
strrchr.c
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2016-01-04 16:05:18 +00:00
strsep.c
This patch cleans up the strsep implementation and improves performance.
2016-12-21 15:16:29 +00:00
strsignal.c
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strspn.c
Use PTR_ALIGN_DOWN on strcspn and strspn
2016-04-01 18:33:03 -03:00
strstr.c
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2016-01-04 16:05:18 +00:00
strtok_r.c
Improve strtok and strtok_r performance. Instead of calling strpbrk which
2016-12-14 15:12:18 +00:00
strtok.c
Improve strtok and strtok_r performance. Instead of calling strpbrk which
2016-12-14 15:12:18 +00:00
strverscmp.c
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strxfrm_l.c
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strxfrm.c
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swab.c
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test-bcopy.c
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test-bzero.c
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test-explicit_bzero.c
New string function explicit_bzero (from OpenBSD).
2016-12-16 16:21:54 -05:00
test-ffs.c
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2016-01-04 16:05:18 +00:00
test-memccpy.c
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2016-01-04 16:05:18 +00:00
test-memchr.c
Fix x86_64 memchr for large input sizes
2016-12-27 10:50:41 -02:00
test-memcmp.c
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2016-01-04 16:05:18 +00:00
test-memcpy.c
Clear destination buffer updated by the previous run
2016-05-18 05:51:59 -07:00
test-memmem.c
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test-memmove.c
Clear destination buffer updated by the previous run
2016-05-18 05:51:59 -07:00
test-mempcpy.c
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test-memrchr.c
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test-memset.c
New string function explicit_bzero (from OpenBSD).
2016-12-16 16:21:54 -05:00
test-rawmemchr.c
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test-stpcpy.c
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test-stpncpy.c
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test-strcasecmp.c
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test-strcasestr.c
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test-strcat.c
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test-strchr.c
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test-strchrnul.c
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test-strcmp.c
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test-strcpy.c
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test-strcspn.c
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test-string.h
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test-strlen.c
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test-strncasecmp.c
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test-strncat.c
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2016-01-04 16:05:18 +00:00
test-strncmp.c
Fix wide-char testsuite SIGBUS on platforms such as Sparc.
2016-08-02 17:46:58 -07:00
test-strncpy.c
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test-strnlen.c
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test-strpbrk.c
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test-strrchr.c
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test-strspn.c
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test-strstr.c
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testcopy.c
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tester.c
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2016-01-04 16:05:18 +00:00
tst-bswap.c
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2016-01-04 16:05:18 +00:00
tst-cmp.c
string: More tests for strcmp, strcasecmp, strncmp, strncasecmp
2016-08-26 14:28:46 +02:00
tst-endian.c
S390: Fix build failure in test string/tst-endian.c with gcc 6.
2016-01-25 12:44:46 +01:00
tst-inlcall.c
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2016-01-04 16:05:18 +00:00
tst-strcoll-overflow.c
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tst-strfry.c
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tst-strlen.c
Modify several tests to use test-skeleton.c
2015-08-06 02:59:04 -04:00
tst-strtok_r.c
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2016-01-04 16:05:18 +00:00
tst-strtok.c
Modify several tests to use test-skeleton.c
2014-11-05 15:24:08 +05:30
tst-strxfrm2.c
Let 'make check subdirs=string' succeed even when it's invoked
2015-09-28 16:55:57 -04:00
tst-strxfrm.c
Modify several tests to use test-skeleton.c
2014-11-05 15:24:08 +05:30
tst-svc2.c
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tst-svc.c
Modify several tests to use test-skeleton.c
2015-08-06 02:59:04 -04:00
tst-svc.expect
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tst-svc.input
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tst-xbzero-opt.c
Do not require memset elimination in explicit_bzero test
2016-12-20 11:08:10 +01:00
Versions
New string function explicit_bzero (from OpenBSD).
2016-12-16 16:21:54 -05:00
wordcopy.c
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2016-01-04 16:05:18 +00:00
xpg-strerror.c
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2016-01-04 16:05:18 +00:00