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kernel-doc parser mishandles declarations split into lines

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Reported by Johannes Berg [1].  Problem here: function
process_proto_type() concatenates the striped lines of declaration
without any whitespace. A one-liner of::

 struct something {
       struct foo
       bar;
       };

has to be::

 struct something {struct foo bar;};

Without the patching process_proto_type(), the result missed the space
between 'foo' and 'bar'::

 struct something {struct foobar;};

Bugfix of process_proto_type() brings next error when blank lines
between enum declaration::

 warning: Enum value ' ' not described in enum 'foo'

Problem here: dump_enum() does not strip leading whitespaces from
the concatenated string (with the new additional space from
process_proto_type).

[1] https://www.mail-archive.com/linux-doc@vger.kernel.org/msg12410.html

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Markus Heiser 2017-06-16 21:27:48 +02:00 committed by Jonathan Corbet
parent 33c2f4ec98
commit 463a0fdc3e
1 changed files with 4 additions and 0 deletions
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scripts/kernel-doc
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@ -2226,6 +2226,7 @@ sub dump_enum($$) {
if ($x =~ /enum\s+(\w+)\s*{(.*)}/) {
$declaration_name = $1;
my $members = $2;
$members =~ s/\s+$//;
foreach my $arg (split ',', $members) {
$arg =~ s/^\s*(\w+).*/$1/;
@ -2766,6 +2767,9 @@ sub process_proto_type($$) {
while (1) {
if ( $x =~ /([^{};]*)([{};])(.*)/ ) {
if( length $prototype ) {
$prototype .= " "
}
$prototype .= $1 . $2;
($2 eq '{') && $brcount++;
($2 eq '}') && $brcount--;