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kernel-doc: fix processing nested structs with attributes 

The current regular expression for strip attributes of structs (and
for nested ones as well) also removes all whitespaces that may
surround the attribute. After that, the code will split structs and
iterate for each symbol separated by comma at the end of struct
definition (e.g. "} alias1, alias2;"). However, if the nested struct
does not have any alias and has an attribute, it will result in a
empty string at the closing bracket (e.g "};"). This will make the
split return nothing and $newmember will keep uninitialized. Fix
that, by ensuring that the attribute substitution will leave at least
one whitespace.

Signed-off-by: André Almeida <andrealmeid@collabora.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20201117165312.118257-2-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
André Almeida 2020-11-17 17:52:44 +01:00 committed by Paolo Bonzini
parent f79248b53b
commit 872e6c47a0
1 changed files with 4 additions and 4 deletions
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scripts/kernel-doc
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@ -1103,10 +1103,10 @@ sub dump_struct($$) {
# strip comments:
$members =~ s/\/\*.*?\*\///gos;
# strip attributes
$members =~ s/\s*__attribute__\s*\(\([a-z0-9,_\*\s\(\)]*\)\)//gi;
$members =~ s/\s*__aligned\s*\([^;]*\)//gos;
$members =~ s/\s*__packed\s*//gos;
$members =~ s/\s*CRYPTO_MINALIGN_ATTR//gos;
$members =~ s/\s*__attribute__\s*\(\([a-z0-9,_\*\s\(\)]*\)\)/ /gi;
$members =~ s/\s*__aligned\s*\([^;]*\)/ /gos;
$members =~ s/\s*__packed\s*/ /gos;
$members =~ s/\s*CRYPTO_MINALIGN_ATTR/ /gos;
# replace DECLARE_BITMAP
$members =~ s/DECLARE_BITMAP\s*\(([^,)]+),\s*([^,)]+)\)/unsigned long $1\[BITS_TO_LONGS($2)\]/gos;
# replace DECLARE_HASHTABLE