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GNU C Library master sources branch master updated. glibc-2.19-773-g96baf6f


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       via  96baf6ffc57b811bbc424a1fc72ef77dd56d7a18 (commit)
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- Log -----------------------------------------------------------------
http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=96baf6ffc57b811bbc424a1fc72ef77dd56d7a18

commit 96baf6ffc57b811bbc424a1fc72ef77dd56d7a18
Author: Siddhesh Poyarekar <siddhesh@redhat.com>
Date:   Sat Jul 5 01:09:15 2014 +0530

    Add comment for MEMCPY_OK_FOR_FWD_MEMMOVE

diff --git a/ChangeLog b/ChangeLog
index a9574c9..d5458c7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2014-07-04  Siddhesh Poyarekar  <siddhesh@redhat.com>
+
+	* sysdeps/generic/memcopy.h: Add comment for
+	MEMCPY_OK_FOR_FWD_MEMMOVE.
+
 2014-07-04  Will Newton  <will.newton@linaro.org>
 
 	* string/memchr.c: Merge from gnulib.
diff --git a/sysdeps/generic/memcopy.h b/sysdeps/generic/memcopy.h
index 45c5fcb..f7b9423 100644
--- a/sysdeps/generic/memcopy.h
+++ b/sysdeps/generic/memcopy.h
@@ -190,6 +190,9 @@ extern void _wordcopy_bwd_dest_aligned (long int, long int, size_t) __THROW;
 /* Threshold value for when to enter the unrolled loops.  */
 #define	OP_T_THRES	16
 
+/* Set to 1 if memcpy is safe to use for forward-copying memmove with
+   overlapping addresses.  This is 0 by default because memcpy implementations
+   are generally not safe for overlapping addresses.  */
 #define MEMCPY_OK_FOR_FWD_MEMMOVE 0
 
 #endif /* memcopy.h */

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog                 |    5 +++++
 sysdeps/generic/memcopy.h |    3 +++
 2 files changed, 8 insertions(+), 0 deletions(-)


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