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checkpatch: emit an error on formats with 0x%<decimal>

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Using 0x%d is wrong.  Emit a message when it happens.

Miscellanea:

Improve the %Lu warning to match formats like %16Lu.

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 2015-09-09 15:37:47 -07:00 committed by Linus Torvalds
parent 7bd7e483c2
commit 6e30075742
1 changed files with 6 additions and 2 deletions
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8
scripts/checkpatch.pl
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@ -4816,16 +4816,20 @@ sub process {
"Consecutive strings are generally better as a single string\n" . $herecurr);
}
# check for %L{u,d,i} in strings
# check for %L{u,d,i} and 0x%[udi] in strings
my $string;
while ($line =~ /(?:^|")([X\t]*)(?:"|$)/g) {
$string = substr($rawline, $-[1], $+[1] - $-[1]);
$string =~ s/%%/__/g;
if ($string =~ /(?<!%)%L[udi]/) {
if ($string =~ /(?<!%)%[\*\d\.\$]*L[udi]/) {
WARN("PRINTF_L",
"\%Ld/%Lu are not-standard C, use %lld/%llu\n" . $herecurr);
last;
}
if ($string =~ /0x%[\*\d\.\$\Llzth]*[udi]/) {
ERROR("PRINTF_0xDECIMAL",
"Prefixing 0x with decimal output is defective\n" . $herecurr);
}
}
# check for line continuations in quoted strings with odd counts of "