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Fix the OP_Affinity operator so that when applying REAL affinity, it

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only sets MEM_IntReal if the integer value will fit in 6 bytes or less.
Fix for ticket [ba2f4585cf495231]

FossilOrigin-Name: 2b221bb15fd2b9f6a426e5eb439f7dbabbe3c4cab010c49b87dae3bb1f16c081
This commit is contained in:
drh
2019-07-29 06:06:53 +00:00
parent 122c514271
commit 337cc3992a
4 changed files with 36 additions and 12 deletions
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20
src/vdbe.c
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@@ -2817,10 +2817,22 @@ case OP_Affinity: {
assert( memIsValid(pIn1) );
applyAffinity(pIn1, zAffinity[0], encoding);
if( zAffinity[0]==SQLITE_AFF_REAL && (pIn1->flags & MEM_Int)!=0 ){
/* When applying REAL affinity, if the result is still MEM_Int,
** indicate that REAL is actually desired */
pIn1->flags |= MEM_IntReal;
pIn1->flags &= ~MEM_Int;
/* When applying REAL affinity, if the result is still an MEM_Int
** that will fit in 6 bytes, then change the type to MEM_IntReal
** so that we keep the high-resolution integer value but know that
** the type really wants to be REAL. */
testcase( pIn1->u.i==140737488355328LL );
testcase( pIn1->u.i==140737488355327LL );
testcase( pIn1->u.i==-140737488355328LL );
testcase( pIn1->u.i==-140737488355329LL );
if( pIn1->u.i<=140737488355327LL && pIn1->u.i>=-140737488355328LL ){
pIn1->flags |= MEM_IntReal;
pIn1->flags &= ~MEM_Int;
}else{
pIn1->u.r = (double)pIn1->u.i;
pIn1->flags |= MEM_Real;
pIn1->flags &= ~MEM_Int;
}
}
REGISTER_TRACE((int)(pIn1-aMem), pIn1);
zAffinity++;