linux-kernel - [PATCH 3.2 120/149] kernel-doc: bugfix

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Message-ID: <lsq.1382345188.85266989@decadent.org.uk>
Date:	Mon, 21 Oct 2013 09:46:28 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org,
	"Linus Torvalds" <torvalds@...ux-foundation.org>,
	"Michal Marek" <mmarek@...e.cz>,
	"Randy Dunlap" <rdunlap@...otime.net>,
	"Daniel Santos" <daniel.santos@...ox.com>
Subject: [PATCH 3.2 120/149] kernel-doc: bugfix - multi-line macros

3.2.52-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Daniel Santos <daniel.santos@...ox.com>

commit 654784284430bf2739985914b65e09c7c35a7273 upstream.

Prior to this patch the following code breaks:

/**
 * multiline_example - this breaks kernel-doc
 */
 #define multiline_example( \
myparam)

Producing this error:

Error(somefile.h:983): cannot understand prototype: 'multiline_example( \ '

This patch fixes the issue by appending all lines ending in a blackslash
(optionally followed by whitespace), removing the backslash and any
whitespace after it prior to appending (just like the C pre-processor
would).

This fixes a break in kerel-doc introduced by the additions to rbtree.h.

Signed-off-by: Daniel Santos <daniel.santos@...ox.com>
Cc: Randy Dunlap <rdunlap@...otime.net>
Cc: Michal Marek <mmarek@...e.cz>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 scripts/kernel-doc | 3 +++
 1 file changed, 3 insertions(+)

--- a/scripts/kernel-doc
+++ b/scripts/kernel-doc
@@ -2044,6 +2044,9 @@ sub process_file($) {
 
     $section_counter = 0;
     while (<IN>) {
+	while (s/\\\s*$//) {
+	    $_ .= <IN>;
+	}
 	if ($state == 0) {
 	    if (/$doc_start/o) {
 		$state = 1;		# next line is always the function name

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