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Re: How to avoid a tree node being garbage collected after C frontend?

From: Ian Lance Taylor <iant at google dot com>
To: "Bingfeng Mei" <bmei at broadcom dot com>
Cc: "gcc\ at gcc dot gnu dot org" <gcc at gcc dot gnu dot org>
Date: Mon, 09 Nov 2009 10:59:47 -0800
Subject: Re: How to avoid a tree node being garbage collected after C frontend?
References: <7FB04A5C213E9943A72EE127DB74F0AD93CCCB3E96@SJEXCHCCR02.corp.ad.broadcom.com>

"Bingfeng Mei" <bmei@broadcom.com> writes:

> I need to pass a tree node (section name from processing pragmas)
> from C frontend to main GCC body (used in TARGET_INSERT_ATTRIBUTES). 
> I store the node in a global pointer array delcared in target.c.
> But the tree node is garbage collected in the end of c-parser
> pass, and causes an ICE later on. I am not familiar with GC part 
> at all. How to prevent this from hanppening?

Mark the global variable with GTY(()).  See many many existing
examples.

Ian

Follow-Ups:
- RE: How to avoid a tree node being garbage collected after C frontend?
  - From: Bingfeng Mei

References:
- How to avoid a tree node being garbage collected after C frontend?
  - From: Bingfeng Mei

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