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Message-Id: <20180531064719.6805-1-avagin@virtuozzo.com>
Date: Thu, 31 May 2018 09:47:19 +0300
From: Andrei Vagin <avagin@...tuozzo.com>
To: musl@...ts.openwall.com
Cc: Andrei Vagin <avagin@...tuozzo.com>
Subject: [PATCH] scanf: handle the L modifier for integers
Look at this code:
char str[] = "sigmask: 0x200";
long long mask = 0;
int ret;
ret = sscanf(str, "sigmask: %Lx", &mask));
printf("%d %llx\n", ret, mask);
Without this patch, ret will be 1 and mask will be 0. It is obviously
incorrect. According to the man page, L should work like ll:
L Indicates that the conversion will be either e, f, or g and the
next pointer is a pointer to long double or the conversion will
be d, i, o, u, or x and the next pointer is a pointer to long
long.
Signed-off-by: Andrei Vagin <avagin@...tuozzo.com>
---
src/stdio/vfscanf.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/src/stdio/vfscanf.c b/src/stdio/vfscanf.c
index 9e030fc4..4d0d771e 100644
--- a/src/stdio/vfscanf.c
+++ b/src/stdio/vfscanf.c
@@ -36,6 +36,7 @@ static void store_int(void *dest, int size, unsigned long long i)
*(long *)dest = i;
break;
case SIZE_ll:
+ case SIZE_L:
*(long long *)dest = i;
break;
}
--
2.14.3
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