| 12345678910111213141516171819202122232425262728293031323334353637 |
- Reduce the initial buffer size for open_memstream (used by vasprintf),
- as most strings are usually smaller than that.
- Realloc the buffer after finishing the string to further reduce size.
- Signed-off-by: Felix Fietkau <nbd@openwrt.org>
- --- a/libc/stdio/vasprintf.c
- +++ b/libc/stdio/vasprintf.c
- @@ -39,6 +39,8 @@ int vasprintf(char **__restrict buf, con
- if (rv < 0) {
- free(*buf);
- *buf = NULL;
- + } else {
- + *buf = realloc(*buf, rv + 1);
- }
- }
-
- --- a/libc/stdio/open_memstream.c
- +++ b/libc/stdio/open_memstream.c
- @@ -17,6 +17,8 @@
-
- #define COOKIE ((__oms_cookie *) cookie)
-
- +#define MEMSTREAM_BUFSIZ 256
- +
- typedef struct {
- char *buf;
- size_t len;
- @@ -134,7 +136,7 @@ FILE *open_memstream(char **__restrict b
- register FILE *fp;
-
- if ((cookie = malloc(sizeof(__oms_cookie))) != NULL) {
- - if ((cookie->buf = malloc(cookie->len = BUFSIZ)) == NULL) {
- + if ((cookie->buf = malloc(cookie->len = MEMSTREAM_BUFSIZ)) == NULL) {
- goto EXIT_cookie;
- }
- *cookie->buf = 0; /* Set nul terminator for buffer. */
|
