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checkpatch: add test for char * arrays that could be static const 

static const char* arrays create smaller text as each function call does
not have to populate the array.

Emit a warning when char *arrays aren't static const and the array is
not apparently global by being declared in the first column.

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 2014-04-03 14:49:18 -07:00 committed by Linus Torvalds
parent 447432f323
commit 9b0fa60d9b
1 changed files with 7 additions and 0 deletions
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7
scripts/checkpatch.pl
View File

@ -2675,6 +2675,13 @@ sub process {
$herecurr); $herecurr);
} }
# check for non-global char *foo[] = {"bar", ...} declarations.
if ($line =~ /^.\s+(?:static\s+|const\s+)?char\s+\*\s*\w+\s*\[\s*\]\s*=\s*\{/) {
WARN("STATIC_CONST_CHAR_ARRAY",
"char * array declaration might be better as static const\n" .
$herecurr);
}
# check for function declarations without arguments like "int foo()" # check for function declarations without arguments like "int foo()"
if ($line =~ /(\b$Type\s+$Ident)\s*\(\s*\)/) { if ($line =~ /(\b$Type\s+$Ident)\s*\(\s*\)/) {
if (ERROR("FUNCTION_WITHOUT_ARGS", if (ERROR("FUNCTION_WITHOUT_ARGS",