diff options
| author | Andrew Tridgell <tridge@samba.org> | 2014-11-06 19:28:38 +1100 |
|---|---|---|
| committer | Andrew Tridgell <tridge@samba.org> | 2014-11-06 19:29:17 +1100 |
| commit | a50f687344f5bc54de2ca12801d46fb96f5d4b62 (patch) | |
| tree | dfc88c19f05cf944ddf127485e90f905b2eb0a98 | |
| parent | 5ee4b2b2c26bbc35d1669840f0676e8aa383b984 (diff) | |
| download | nuttx-a50f687344f5bc54de2ca12801d46fb96f5d4b62.tar.gz nuttx-a50f687344f5bc54de2ca12801d46fb96f5d4b62.tar.bz2 nuttx-a50f687344f5bc54de2ca12801d46fb96f5d4b62.zip | |
lib_sscanf: fixed a hang in scanf() on end of string
if we reach end of buffer when we are not on a format specifier then
the code would loop forever.
| -rw-r--r-- | nuttx/libc/stdio/lib_sscanf.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/nuttx/libc/stdio/lib_sscanf.c b/nuttx/libc/stdio/lib_sscanf.c index 5c99ee47b..c1ad17323 100644 --- a/nuttx/libc/stdio/lib_sscanf.c +++ b/nuttx/libc/stdio/lib_sscanf.c @@ -699,6 +699,10 @@ int vsscanf(FAR char *buf, FAR const char *fmt, va_list ap) buf++; } } + else { + /* it is not a format specifier, and buf is empty. Stop matching */ + break; + } } /* Clean up - read whitespaces */ |