Hi,

this fixes the following ICE in decode_addr_const:

+===========================GNAT BUG DETECTED==============================+
| 8.0.0 20170704 (experimental) [trunk revision 249942] (x86_64-suse-linux) 
GCC error:|
| in decode_addr_const, at varasm.c:2880 

stemming from a CONSTRUCTOR containing absolute addresses hidden behind a 
COMPONENT_REF or similar references.

Fixed by adding support for INDIRECT_REF <INTEGER_CST> to decode_addr_const.

Tested on x86_64-suse-linux, OK for the mainline?


2017-07-07  Eric Botcazou  <ebotcazou@adacore.com>

	* varasm.c (decode_addr_const): Deal with INDIRECT_REF <INTEGER_CST>.


2017-07-07  Eric Botcazou  <ebotcazou@adacore.com>

	* gnat.dg/aggr22.ad[sb]: New test.

-- 
Eric Botcazou