Fixes error which did not happen always. Changes of being affected by
the bug where greater the more there where pids defined as pmap argument.
The debian bug referral can almost certainly reproduce the problem,
especially when tried multiple times in row.
pmap: malloc.c:3096: sYSMALLOc: Assertion `(old_top == (((mbinptr)
(((char *) &((av)->bins[((1) - 1) * 2])) - __builtin_offsetof (struct
malloc_chunk, fd)))) && old_size == 0) || ((unsigned long) (old_size) >=
(unsigned long)((((__builtin_offsetof (struct malloc_chunk,
fd_nextsize))+((2 * (sizeof(size_t))) - 1)) & ~((2 * (sizeof(size_t))) -
1))) && ((old_top)->size & 0x1) && ((unsigned long)old_end & pagemask) ==
0)' failed.
Reported-by: lee <lee@yun.yagibdah.de>
Bug-Debian: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=688180
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
A callback provision in the form of xalloc_err_handler
(of type message_fn) was added to the alloc module.
This change allowed a program like top, who alters the
termios structure, to override the default fprint(stderr...)
behavior in the event of an error.
The new function xstrdup was also added for symmetry.
