Making a variable addressable in GIMPLE

[Diego Novillo]

Yoav Etsion wrote:

> The problem is that the first mudflap pass takes place at the GIMPLE
> level, at which point all variables have their
> addressable/non-addressable attributes set, which forbids me to build an
> ADDR_EXPR node for a non-addressable pointer variable ("invalid operand
> to unary & operator" error).
> 
Call build_addr() to create the ADDR_EXPR.  It will set the
TREE_ADDRESSABLE bit on the variable and set some attributes on the
ADDR_EXPR itself.


That message suggest that you may be trying to build the address of a
non-decl, though.  Show me the code and an example of your transformation?