Introduce xrealloc, use it.

2014-05-26  Janne Blomqvist  <jb@gcc.gnu.org>

	* libgfortran.h (xrealloc): New prototype.
	* runtime/memory.c (xrealloc): New function.
	* io/fbuf.c (fbuf_alloc): Use xrealloc.
	* io/list_read.c (push_char_default): Likewise.
	(push_char4): Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@210948 138bc75d-0d04-0410-961f-82ee72b054a4
	* gcc.dg/tree-ssa/ssa-fre-40.c: Cleanup fre1 tree dump.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@210950 138bc75d-0d04-0410-961f-82ee72b054a4