From: "Yann E. MORIN" <yann.morin.1...@free.fr>
- no need for a double-indirection for the temporary sym_match_arr array
- the temporary sym_match_arr array is not NULL terminated, so no need
to allocate n+1 elements
- two minor style fixes
- grammar fix in comment
Reported-by: Jean Delvare <jdelv...@suse.de>
Signed-off-by: "Yann E. MORIN" <yann.morin.1...@free.fr>
Cc: Jean Delvare <jdelv...@suse.de>
---
scripts/kconfig/symbol.c | 39 +++++++++++++++------------------------
1 file changed, 15 insertions(+), 24 deletions(-)
diff --git a/scripts/kconfig/symbol.c b/scripts/kconfig/symbol.c
index 020a0ac..a76b8fd 100644
--- a/scripts/kconfig/symbol.c
+++ b/scripts/kconfig/symbol.c
@@ -963,10 +963,10 @@ struct sym_match {
* - first, symbols that match exactly
* - then, alphabetical sort
*/
-static int sym_rel_comp( const void *sym1, const void *sym2 )
+static int sym_rel_comp(const void *sym1, const void *sym2)
{
- struct sym_match *s1 = *(struct sym_match **)sym1;
- struct sym_match *s2 = *(struct sym_match **)sym2;
+ const struct sym_match *s1 = sym1;
+ const struct sym_match *s2 = sym2;
int exact1, exact2;
/* Exact match:
@@ -992,7 +992,7 @@ static int sym_rel_comp( const void *sym1, const void *sym2
)
struct symbol **sym_re_search(const char *pattern)
{
struct symbol *sym, **sym_arr = NULL;
- struct sym_match **sym_match_arr = NULL;
+ struct sym_match *sym_match_arr = NULL;
int i, cnt, size;
regex_t re;
regmatch_t match[1];
@@ -1005,47 +1005,38 @@ struct symbol **sym_re_search(const char *pattern)
return NULL;
for_all_symbols(i, sym) {
- struct sym_match *tmp_sym_match;
if (sym->flags & SYMBOL_CONST || !sym->name)
continue;
if (regexec(&re, sym->name, 1, match, 0))
continue;
- if (cnt + 1 >= size) {
+ if (cnt >= size) {
void *tmp;
size += 16;
- tmp = realloc(sym_match_arr, size * sizeof(struct
sym_match *));
- if (!tmp) {
+ tmp = realloc(sym_match_arr, size * sizeof(struct
sym_match));
+ if (!tmp)
goto sym_re_search_free;
- }
sym_match_arr = tmp;
}
sym_calc_value(sym);
- tmp_sym_match = (struct sym_match*)malloc(sizeof(struct
sym_match));
- if (!tmp_sym_match)
- goto sym_re_search_free;
- tmp_sym_match->sym = sym;
- /* As regexec return 0, we know we have a match, so
+ /* As regexec returned 0, we know we have a match, so
* we can use match[0].rm_[se]o without further checks
*/
- tmp_sym_match->so = match[0].rm_so;
- tmp_sym_match->eo = match[0].rm_eo;
- sym_match_arr[cnt++] = tmp_sym_match;
+ sym_match_arr[cnt].so = match[0].rm_so;
+ sym_match_arr[cnt].eo = match[0].rm_eo;
+ sym_match_arr[cnt++].sym = sym;
}
if (sym_match_arr) {
- qsort(sym_match_arr, cnt, sizeof(struct sym_match*),
sym_rel_comp);
+ qsort(sym_match_arr, cnt, sizeof(struct sym_match),
sym_rel_comp);
sym_arr = malloc((cnt+1) * sizeof(struct symbol));
if (!sym_arr)
goto sym_re_search_free;
for (i = 0; i < cnt; i++)
- sym_arr[i] = sym_match_arr[i]->sym;
+ sym_arr[i] = sym_match_arr[i].sym;
sym_arr[cnt] = NULL;
}
sym_re_search_free:
- if (sym_match_arr) {
- for (i = 0; i < cnt; i++)
- free(sym_match_arr[i]);
- free(sym_match_arr);
- }
+ /* sym_match_arr can be NULL if no match, but free(NULL) is OK */
+ free(sym_match_arr);
regfree(&re);
return sym_arr;
--
1.8.1.2
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