Re: dissect: teach do_initializer() to handle the nested EXPR_IDENTIFIER's

[Lance Richardson <lrichard@redhat.com>]

+++ Oleg Nesterov [08/02/16 16:13 +0100]:
>do_initializer() is very limited/buggy but it was able to parse the kernel
>code until ftrace started to use ".a.b = x" rather than ".a = { .b = x }"
>in initializers.
>
>Test-case:
>
>	struct O {
>		struct I {
>			int mem;
>		} inn;
>		int end;
>	} var = {
>		.inn.mem = 0,
>		0,
>	};
>
>before the patch:
>
>	1:8   s def  O
>	2:16  s def  I
>	6:3   g def  var                              struct O
>	6:3   g -w-  var                              struct O
>	7:10  s -w-  O.inn                            struct I
>	7:10  s -w-  I.*                              struct I
>	I.c:7:14: warning: bad expr->type: 25
>	8:9   s -w-  O.end                            int
>
>after:
>
>	1:8   s def  O
>	2:16  s def  I
>	6:3   g def  var                              struct O
>	6:3   g -w-  var                              struct O
>	7:10  s -w-  O.inn                            struct I
>	7:14  s -w-  I.mem                            int
>	8:9   s -w-  O.end                            int
>
>Signed-off-by: Oleg Nesterov <oleg@redhat.com>
>---
LGTM, builds and test case works as expected.
Acked-by: Lance Richardson <lrichard@redhat.com>