0x%<foo> should be used to emit hexadecimal values.
Uses of 0x%[udi] emit decimal values but these should
probably instead use 0x%x variants.
Warn on these uses.
Signed-off-by: Joe Perches <j...@perches.com>
Noticed-by: Hans Wennborg <h...@hanshq.net>
---
scripts/checkpatch.pl | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index da74e65..0178fe0 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -4985,6 +4985,10 @@ sub process {
while ($line =~ /(?:^|")([X\t]*)(?:"|$)/g) {
$string = substr($rawline, $-[1], $+[1] - $-[1]);
$string =~ s/%%/__/g;
+ if ($string =~
/(0x(?<!%)%[0-9.\*]*[Ll]*[udi])(?![xX])/) {
+ WARN("PRINTF_HEX_WITH_DECIMAL",
+ "Using printf format $1 emits a decimal
not hexadecimal value\n" . $herecurr);
+ }
if ($string =~ /(?<!%)%L[udi]/) {
WARN("PRINTF_L",
"\%Ld/%Lu are not-standard C, use
%lld/%llu\n" . $herecurr);
--
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