[PATCH 01/12] notes: make GET_NIBBLE macro more robust

From

Michael Haggerty <mhagger@alum.mit.edu>

Date

Aug 26, 2017, 08:28 UTC

Message-ID

<df9d90032a9bc36333b4c5d19edf7135bf862c19.1503734566.git.mhagger@alum.mit.edu>

In-Reply-To

<cover.1503734566.git.mhagger@alum.mit.edu>

    GET_NIBBLE(n, (unsigned char *)data);

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
---
 notes.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/notes.c b/notes.c
index f090c88363..00630a9396 100644
--- a/notes.c
+++ b/notes.c
@@ -64,7 +64,7 @@ struct non_note {
 #define CLR_PTR_TYPE(ptr)       ((void *) ((uintptr_t) (ptr) & ~3))
 #define SET_PTR_TYPE(ptr, type) ((void *) ((uintptr_t) (ptr) | (type)))
 
-#define GET_NIBBLE(n, sha1) (((sha1[(n) >> 1]) >> ((~(n) & 0x01) << 2)) & 0x0f)
+#define GET_NIBBLE(n, sha1) ((((sha1)[(n) >> 1]) >> ((~(n) & 0x01) << 2)) & 0x0f)
 
 #define KEY_INDEX (GIT_SHA1_RAWSZ - 1)
 #define FANOUT_PATH_SEPARATORS ((GIT_SHA1_HEXSZ / 2) - 1)

-- 
2.11.0