[Bug libc/3432] New: memmove() does not conform with the C99 standard.

[Bug libc/3432] New: memmove() does not conform with the C99 standard.

[yuvalfl at gmail dot com]

By reviewing the glibc sources it turns out that memmove() only does word copy.
Thus, the function will not work correctly when |dst-src|<|word|.

The C99 standard (section 7.21.2.2 "The memmove function") mandates:
---
#include <string.h>
void *memmove(void *s1, const void *s2, size_t n);

The memmove function copies n characters from the object pointed to by
s2 into the object pointed to by s1. Copying takes place as if the n
characters from the object pointed to by s2 are first copied into a
temporary array of n characters that does not overlap the objects
pointed to by s1 and s2, and then the n characters from the temporary
array are copied into the object pointed to by s1.
---

-- 
           Summary: memmove() does not conform with the C99 standard.
           Product: glibc
           Version: unspecified
            Status: NEW
          Severity: minor
          Priority: P2
         Component: libc
        AssignedTo: drepper at redhat dot com
        ReportedBy: yuvalfl at gmail dot com
                CC: glibc-bugs at sources dot redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=3432

------- You are receiving this mail because: -------
You are on the CC list for the bug, or are watching someone who is.

[Bug libc/3432] memmove() does not conform with the C99 standard.

[drepper at redhat dot com]

------- Additional Comments From drepper at redhat dot com  2006-10-29 18:42 -------
Nonsense, memmove takes the buffer location into account on all the supported
architectures.  I don't know what file you're looking at.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |INVALID


http://sourceware.org/bugzilla/show_bug.cgi?id=3432

------- You are receiving this mail because: -------
You are on the CC list for the bug, or are watching someone who is.