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Re: How to determine source location of pragma?

From: Manuel LÃpez-IbÃÃez <lopezibanez at gmail dot com>
To: Vanush Vaswani <vanush at gmail dot com>, gcc at gcc dot gnu dot org
Date: Mon, 11 Jan 2016 18:17:32 +0000
Subject: Re: How to determine source location of pragma?
Authentication-results: sourceware.org; auth=none
References: <CAJbabricoN7J+eh9yJyKc-pUuiTAyPfjRBD=bDNTQLRPAgu12A at mail dot gmail dot com>

On 11/01/16 01:08, Vanush Vaswani wrote:

I am new to GCC internals.

I'm trying to create a plugin to operate on pragmas. Currently have
this working using c_register_pragma with a callback.

The callback performs pragma_lex and is able to retrieve the string
token of the pragma based on this example.
https://github.com/wh5a/gcc-plugin/blob/master/pragma_plugin.c

How can I determine the line number of the pragma? I tried
DECL_SOURCE_LINE on the tree type but this returns 0. Do I have to
interact with cpplib?

pragma_lex in GCC 6 has an optional &loc parameter. Seehandle_pragma_diagnostic() in c-pragma.c to see how it is used.


Cheers,

Manuel.

Follow-Ups:
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References:
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