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authorJunio C Hamano <gitster@pobox.com>2017-08-11 20:26:57 (GMT)
committerJunio C Hamano <gitster@pobox.com>2017-08-11 20:26:57 (GMT)
commitc2bfd0f9cba5e94c08dcc1033d39d7bef29be08e (patch)
treec1d671df12889509e0c6901f5895b3246a7b2827 /compat
parent127f98f42b0b72d2d23c97e7d783d369b6e33fa0 (diff)
parent5b114f3bb0820c1f57fb4a9cd14b62b55aa30d31 (diff)
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Merge branch 'rs/bswap-ubsan-fix'
Code clean-up. * rs/bswap-ubsan-fix: bswap: convert get_be16, get_be32 and put_be32 to inline functions bswap: convert to unsigned before shifting in get_be32
Diffstat (limited to 'compat')
-rw-r--r--compat/bswap.h38
1 files changed, 24 insertions, 14 deletions
diff --git a/compat/bswap.h b/compat/bswap.h
index d47c003..7d063e9 100644
--- a/compat/bswap.h
+++ b/compat/bswap.h
@@ -162,19 +162,29 @@ static inline uint64_t git_bswap64(uint64_t x)
#else
-#define get_be16(p) ( \
- (*((unsigned char *)(p) + 0) << 8) | \
- (*((unsigned char *)(p) + 1) << 0) )
-#define get_be32(p) ( \
- (*((unsigned char *)(p) + 0) << 24) | \
- (*((unsigned char *)(p) + 1) << 16) | \
- (*((unsigned char *)(p) + 2) << 8) | \
- (*((unsigned char *)(p) + 3) << 0) )
-#define put_be32(p, v) do { \
- unsigned int __v = (v); \
- *((unsigned char *)(p) + 0) = __v >> 24; \
- *((unsigned char *)(p) + 1) = __v >> 16; \
- *((unsigned char *)(p) + 2) = __v >> 8; \
- *((unsigned char *)(p) + 3) = __v >> 0; } while (0)
+static inline uint16_t get_be16(const void *ptr)
+{
+ const unsigned char *p = ptr;
+ return (uint16_t)p[0] << 8 |
+ (uint16_t)p[1] << 0;
+}
+
+static inline uint32_t get_be32(const void *ptr)
+{
+ const unsigned char *p = ptr;
+ return (uint32_t)p[0] << 24 |
+ (uint32_t)p[1] << 16 |
+ (uint32_t)p[2] << 8 |
+ (uint32_t)p[3] << 0;
+}
+
+static inline void put_be32(void *ptr, uint32_t value)
+{
+ unsigned char *p = ptr;
+ p[0] = value >> 24;
+ p[1] = value >> 16;
+ p[2] = value >> 8;
+ p[3] = value >> 0;
+}
#endif