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From 1ac743a7d0d20e16fc325749d593edaaed89d706 Mon Sep 17 00:00:00 2001
From: Alexander Bokovoy <ab@samba.org>
Date: Wed, 6 Feb 2013 10:17:57 +0200
Subject: [PATCH] PIDL: fix parsing linemarkers in preprocessor output
When PIDL calls out to C preprocessor to expand IDL files
and parse the output, it filters out linemarkers and line control
information as described in http://gcc.gnu.org/onlinedocs/cpp/Preprocessor-Output.html
and http://gcc.gnu.org/onlinedocs/cpp/Line-Control.html#Line-Control
With gcc 4.8 stdc-predef.h is included automatically and linemarker for the
file has extended flags that PIDL couldn't parse ('system header that needs to
be extern "C" protected for C++')
Thanks to Jakub Jelinek <jakub@redhat.com> for explanation of the linemarker format.
Fixes https://bugzilla.redhat.com/show_bug.cgi?id=906517
Reviewed-by: Andreas Schneider <asn@samba.org>
(cherry picked from commit 6ba7ab5c14801aecae96373d5a9db7ab82957526)
Signed-off-by: Andreas Schneider <asn@samba.org>
---
pidl/idl.yp | 4 +++-
pidl/lib/Parse/Pidl/IDL.pm | 4 +++-
2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/pidl/idl.yp b/pidl/idl.yp
index b5c5185..c8a65f6 100644
--- a/pidl/idl.yp
+++ b/pidl/idl.yp
@@ -610,7 +610,9 @@ again:
for ($parser->YYData->{INPUT}) {
if (/^\#/) {
- if (s/^\# (\d+) \"(.*?)\"( \d+|)//) {
+ # Linemarker format is described at
+ # http://gcc.gnu.org/onlinedocs/cpp/Preprocessor-Output.html
+ if (s/^\# (\d+) \"(.*?)\"(( \d+){1,4}|)//) {
$parser->YYData->{LINE} = $1-1;
$parser->YYData->{FILE} = $2;
goto again;
diff --git a/pidl/lib/Parse/Pidl/IDL.pm b/pidl/lib/Parse/Pidl/IDL.pm
index d4820ff..6927c89 100644
--- a/pidl/lib/Parse/Pidl/IDL.pm
+++ b/pidl/lib/Parse/Pidl/IDL.pm
@@ -2576,7 +2576,9 @@ again:
for ($parser->YYData->{INPUT}) {
if (/^\#/) {
- if (s/^\# (\d+) \"(.*?)\"( \d+|)//) {
+ # Linemarker format is described at
+ # http://gcc.gnu.org/onlinedocs/cpp/Preprocessor-Output.html
+ if (s/^\# (\d+) \"(.*?)\"(( \d+){1,4}|)//) {
$parser->YYData->{LINE} = $1-1;
$parser->YYData->{FILE} = $2;
goto again;
--
1.8.1.1
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