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checkpatch: improve "no space after cast" test 

Some false positives exist on this test.

For instance:
	*va_arg(args, signed char *) = val.s;
or
	memset(foo, 0, sizeof(struct bar *) * baz));

Ignore lines that have an arithmetic operator or assignment
after what appears to be a cast to a pointer "(foo *)".

Add $Arithmetic convenience variable.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Joe Perches 2013-07-03 15:05:31 -07:00 committed by Linus Torvalds
parent 179f8f40fc
commit 23f780c904
1 changed files with 3 additions and 2 deletions
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5
scripts/checkpatch.pl
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@ -241,10 +241,11 @@ our $Float = qr{$Float_hex|$Float_dec|$Float_int};
our $Constant = qr{$Float|$Binary|$Hex|$Int};
our $Assignment = qr{\*\=|/=|%=|\+=|-=|<<=|>>=|&=|\^=|\|=|=};
our $Compare = qr{<=|>=|==|!=|<|>};
our $Arithmetic = qr{\+|-|\*|\/|%};
our $Operators = qr{
<=|>=|==|!=|
=>|->|<<|>>|<|>|!|~|
&&|\|\||,|\^|\+\+|--|&|\||\+|-|\*|\/|%
&&|\|\||,|\^|\+\+|--|&|\||$Arithmetic
}x;
our $NonptrType;
@ -1885,7 +1886,7 @@ sub process {
}
}
if ($line =~ /^\+.*\*[ \t]*\)[ \t]+/) {
if ($line =~ /^\+.*\*[ \t]*\)[ \t]+(?!$Assignment|$Arithmetic)/) {
CHK("SPACING",
"No space is necessary after a cast\n" . $hereprev);
}