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| author | Andy Spencer <andy753421@gmail.com> | 2009-10-01 15:44:27 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-10-01 16:11:16 -0700 |
| commit | 8fccae2c95506270f74ee8429c273b0924e89c83 (patch) | |
| tree | 0d7147c02cda1ae3476698808957477569160c00 /lib/vsprintf.c | |
| parent | d41a4b515e346b3afdb5147d86927fa5835fc13b (diff) | |
| download | lwn-8fccae2c95506270f74ee8429c273b0924e89c83.tar.gz lwn-8fccae2c95506270f74ee8429c273b0924e89c83.zip | |
sscanf(): fix %*s%n
When using %*s, sscanf should honor conversion specifiers immediately
following the %*s. For example, the following code should find the
position of the end of the string "hello".
int end;
char buf[] = "hello world";
sscanf(buf, "%*s%n", &end);
printf("%d\n", end);
Ideally, sscanf would advance the fmt and str pointers the same as it
would without the *, but the code for that is rather complicated and is
not included in the patch.
Signed-off-by: Andy Spencer <andy753421@gmail.com>
Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/vsprintf.c')
| -rw-r--r-- | lib/vsprintf.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/vsprintf.c b/lib/vsprintf.c index b91839e9e892..33bed5e67a21 100644 --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -1771,7 +1771,7 @@ int vsscanf(const char * buf, const char * fmt, va_list args) * advance both strings to next white space */ if (*fmt == '*') { - while (!isspace(*fmt) && *fmt) + while (!isspace(*fmt) && *fmt != '%' && *fmt) fmt++; while (!isspace(*str) && *str) str++; |