tree: git://git.cmpxchg.org/linux-mmotm.git master
head: df25ba7db0775d87018e2cd92f26b9b087093840
commit: 31b8d64a94ed8129048a904cc07c11a05c2efd6f [153/230] libata: Use glob_match from lib/glob.c
reproduce: make C=1 CF=-D__CHECK_ENDIAN__
>> lib/glob.c:48:32: sparse: Using plain integer as NULL pointer
vim +48 lib/glob.c
37e65fe1 George Spelvin 2014-06-20 32 * treat / or leading . specially; it isn't actually used for pathnames.
37e65fe1 George Spelvin 2014-06-20 33 *
37e65fe1 George Spelvin 2014-06-20 34 * Note that according to glob(7) (and unlike bash), character classes
37e65fe1 George Spelvin 2014-06-20 35 * are complemented by a leading !; this does not support the regex-style
37e65fe1 George Spelvin 2014-06-20 36 * [^a-z] syntax.
37e65fe1 George Spelvin 2014-06-20 37 *
37e65fe1 George Spelvin 2014-06-20 38 * An opening bracket without a matching close is matched literally.
37e65fe1 George Spelvin 2014-06-20 39 */
37e65fe1 George Spelvin 2014-06-20 40 bool __pure glob_match(char const *pat, char const *str)
37e65fe1 George Spelvin 2014-06-20 41 {
37e65fe1 George Spelvin 2014-06-20 42 /*
37e65fe1 George Spelvin 2014-06-20 43 * Backtrack to previous * on mismatch and retry starting one
37e65fe1 George Spelvin 2014-06-20 44 * character later in the string. Because * matches all characters
37e65fe1 George Spelvin 2014-06-20 45 * (no exception for /), it can be easily proved that there's
37e65fe1 George Spelvin 2014-06-20 46 * never a need to backtrack multiple levels.
37e65fe1 George Spelvin 2014-06-20 47 */
37e65fe1 George Spelvin 2014-06-20 @48 char const *back_pat = 0, *back_str = back_str;
37e65fe1 George Spelvin 2014-06-20 49
37e65fe1 George Spelvin 2014-06-20 50 /*
37e65fe1 George Spelvin 2014-06-20 51 * Loop over each token (character or class) in pat, matching
37e65fe1 George Spelvin 2014-06-20 52 * it against the remaining unmatched tail of str. Return false
37e65fe1 George Spelvin 2014-06-20 53 * on mismatch, or true after matching the trailing nul bytes.
37e65fe1 George Spelvin 2014-06-20 54 */
37e65fe1 George Spelvin 2014-06-20 55 for (;;) {
37e65fe1 George Spelvin 2014-06-20 56 unsigned char c = *str++;
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