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Fix additional cases of possible signed integer overflow, especially with

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regard to negation.

FossilOrigin-Name: 2d5800bd8cfc7d7f5578a71b1aeaa74b2ec4b372
This commit is contained in:
drh
2011-03-08 02:38:28 +00:00
parent 2327275b8c
commit d50ffc416f
9 changed files with 45 additions and 37 deletions
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6
src/btree.c
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@@ -4901,11 +4901,9 @@ static int allocateBtreePage(
u32 i;
int dist;
closest = 0;
dist = get4byte(&aData[8]) - nearby;
if( dist<0 ) dist = -dist;
dist = sqlite3AbsInt32(get4byte(&aData[8]) - nearby);
for(i=1; i<k; i++){
int d2 = get4byte(&aData[8+i*4]) - nearby;
if( d2<0 ) d2 = -d2;
int d2 = sqlite3AbsInt32(get4byte(&aData[8+i*4]) - nearby);
if( d2<dist ){
closest = i;
dist = d2;