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authorJoe Perches <joe@perches.com>2014-01-27 17:07:18 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2014-01-27 21:02:40 -0800
commitb36190c5f85724da1871bfb8eddbeb77a45c4952 (patch)
treed424160e8bed505f1073709e0d5504068784f8d2 /scripts
parenta3978a519461b095b776f44a86079f5448c96963 (diff)
downloadlinux-b36190c5f85724da1871bfb8eddbeb77a45c4952.tar.gz
checkpatch.pl: check for function declarations without arguments
Functions like this one are evil: void foo() { ... } Because these functions allow variadic arguments without checking the arguments at all. Original patch by Richard Weinberger. Signed-off-by: Joe Perches <joe@perches.com> Cc: Richard Weinberger <richard@nod.at> Cc: Borislav Petkov <bp@alien8.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts')
-rwxr-xr-xscripts/checkpatch.pl9
1 files changed, 9 insertions, 0 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 1dbd6d1cd1b..0ea2a1e24ad 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2665,6 +2665,15 @@ sub process {
$herecurr);
}
+# check for function declarations without arguments like "int foo()"
+ if ($line =~ /(\b$Type\s+$Ident)\s*\(\s*\)/) {
+ if (ERROR("FUNCTION_WITHOUT_ARGS",
+ "Bad function definition - $1() should probably be $1(void)\n" . $herecurr) &&
+ $fix) {
+ $fixed[$linenr - 1] =~ s/(\b($Type)\s+($Ident))\s*\(\s*\)/$2 $3(void)/;
+ }
+ }
+
# check for uses of DEFINE_PCI_DEVICE_TABLE
if ($line =~ /\bDEFINE_PCI_DEVICE_TABLE\s*\(\s*(\w+)\s*\)\s*=/) {
if (WARN("DEFINE_PCI_DEVICE_TABLE",