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Changes to avoid undefined behavior in memset() and memcpy() and in the

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comparisons of pointers from different allocations.  All problems are found
by analysis tools - none have been seen in the wild.

FossilOrigin-Name: 901d0b8f3b72e96ffa8e9436993a12980f5ebd51
This commit is contained in:
drh
2015-12-08 16:58:45 +00:00
parent ea06a271a4
commit 72ea29d7ae
5 changed files with 20 additions and 11 deletions
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5
src/btree.c
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@@ -7521,8 +7521,13 @@ static int balance_nonroot(
** overflow cell), we can skip updating the pointer map entries. */
if( iOld>=nNew
|| pNew->pgno!=aPgno[iOld]
#ifdef HAVE_STDINT_H
|| (intptr_t)pCell<(intptr_t)aOld
|| (intptr_t)pCell>=(intptr_t)&aOld[usableSize]
#else
|| pCell<aOld
|| pCell>=&aOld[usableSize]
#endif
){
if( !leafCorrection ){
ptrmapPut(pBt, get4byte(pCell), PTRMAP_BTREE, pNew->pgno, &rc);