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Avoid left-shifts of signed integers.

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FossilOrigin-Name: 0715ce164333e27671efbec8796f238df98cc287
This commit is contained in:
drh
2016-05-03 00:04:55 +00:00
parent 39f98c52d0
commit 48cd59a57d
4 changed files with 20 additions and 21 deletions
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15
ext/session/sqlite3session.c
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@ -278,19 +278,18 @@ static int sessionVarintGet(u8 *aBuf, int *piVal){
return getVarint32(aBuf, *piVal);
}
/* Load an unaligned and unsigned 32-bit integer */
#define SESSION_UINT32(x) (((u32)(x)[0]<<24)|((x)[1]<<16)|((x)[2]<<8)|(x)[3])
/*
** Read a 64-bit big-endian integer value from buffer aRec[]. Return
** the value read.
*/
static sqlite3_int64 sessionGetI64(u8 *aRec){
return (((sqlite3_int64)aRec[0]) << 56)
+ (((sqlite3_int64)aRec[1]) << 48)
+ (((sqlite3_int64)aRec[2]) << 40)
+ (((sqlite3_int64)aRec[3]) << 32)
+ (((sqlite3_int64)aRec[4]) << 24)
+ (((sqlite3_int64)aRec[5]) << 16)
+ (((sqlite3_int64)aRec[6]) << 8)
+ (((sqlite3_int64)aRec[7]) << 0);
u64 x = SESSION_UINT32(aRec);
u32 y = SESSION_UINT32(aRec+4);
x = (x<<32) + y;
return (sqlite3_int64)x;
}
/*