diff options
| author | Horia Geanta <horia.geanta@freescale.com> | 2014-07-12 09:55:03 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-07-12 11:30:36 -0700 |
| commit | cbb4d3e6510b99522719c5ef0cd0482886a324c0 (patch) | |
| tree | 862d33180349189935e7d37b56df90f3b984e3de | |
| parent | c8c3f7d621c1dd803e92d4cdd59e2f730be71a2b (diff) | |
scripts/kernel-doc: handle object-like macros
Object-like macros are different than function-like macros:
https://gcc.gnu.org/onlinedocs/cpp/Object-like-Macros.html
https://gcc.gnu.org/onlinedocs/cpp/Function-like-Macros.html
They are not parsed correctly, generating invalid intermediate
files (xmls) for cases like:
#define BIT_MASK (0xFF << BIT_SHIFT)
where "OxFF <<" is considered to be parameter type.
When parsing, we can differentiate beween these two types of macros by
checking whether there is at least one whitespace b/w "#define" and
first opening parenthesis.
Signed-off-by: Horia Geanta <horia.geanta@freescale.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rwxr-xr-x | scripts/kernel-doc | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/scripts/kernel-doc b/scripts/kernel-doc index da058da413e7..16a07cfa4d34 100755 --- a/scripts/kernel-doc +++ b/scripts/kernel-doc @@ -2073,6 +2073,7 @@ sub check_return_section { sub dump_function($$) { my $prototype = shift; my $file = shift; + my $noret = 0; $prototype =~ s/^static +//; $prototype =~ s/^extern +//; @@ -2086,7 +2087,7 @@ sub dump_function($$) { $prototype =~ s/__init_or_module +//; $prototype =~ s/__must_check +//; $prototype =~ s/__weak +//; - $prototype =~ s/^#\s*define\s+//; #ak added + my $define = $prototype =~ s/^#\s*define\s+//; #ak added $prototype =~ s/__attribute__\s*\(\([a-z,]*\)\)//; # Yes, this truly is vile. We are looking for: @@ -2105,7 +2106,15 @@ sub dump_function($$) { # - atomic_set (macro) # - pci_match_device, __copy_to_user (long return type) - if ($prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ || + if ($define && $prototype =~ m/^()([a-zA-Z0-9_~:]+)\s+/) { + # This is an object-like macro, it has no return type and no parameter + # list. + # Function-like macros are not allowed to have spaces between + # declaration_name and opening parenthesis (notice the \s+). + $return_type = $1; + $declaration_name = $2; + $noret = 1; + } elsif ($prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ || $prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ || $prototype =~ m/^(\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ || $prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ || @@ -2140,7 +2149,7 @@ sub dump_function($$) { # of warnings goes sufficiently down, the check is only performed in # verbose mode. # TODO: always perform the check. - if ($verbose) { + if ($verbose && !$noret) { check_return_section($file, $declaration_name, $return_type); } |