[PATCH] Fix segfault with -E -dU

[Eric Botcazou]

Hi,

when -E -dU is invoked on a builtin macro (e.g. __FILE__ or __STDC__ on 
Solaris), it first prints:

internal error: invalid hash type 1 in cpp_macro_definition

and then segfaults.  Fixed by the attached patchlet.

Tested on i586-suse-linux, OK for mainline?


2008-09-23  Eric Botcazou  <ebotcazou@adacore.com>

	* c-ppoutput.c (cb_used_define): Do nothing for a builtin node.


2008-09-23  Eric Botcazou  <ebotcazou@adacore.com>

	* gcc.dg/cpp/cmdlne-dU-23.c: New test.


-- 
Eric Botcazou
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