1999-12-02 Mike Karr <mkarr@mathworks.com>

1999-12-02  Mike Karr  <mkarr@mathworks.com>

	* cccp.c (argdata): Added free_ptr member.
	(macroexpand): Initialize free_ptr of each argument. When an
	argument's buffers are freed, if the argument's free_ptr corresponds
	to a buffer on the input stack, then return the free_ptr to that stack
	frame, otherwise, free it.
	(macarg): If an argument begins and ends on the same input stack level,
	then transfer the free_ptr of that buffer to the argument in case
	the stack is popped during the processing of a subsequent argument.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@30760 138bc75d-0d04-0410-961f-82ee72b054a4