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Use memmove() rather than a home-made copy loop in insertCell() too.

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FossilOrigin-Name: a3d796b1673ca68ced247d63c22ddcfb1f9d56ea
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drh
2013-12-09 02:32:19 +00:00
parent 9bb7c4ff4f
commit 8f518837f9
3 changed files with 8 additions and 17 deletions
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11
src/btree.c
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@@ -5733,9 +5733,6 @@ static void insertCell(
int ins; /* Index in data[] where new cell pointer is inserted */
int cellOffset; /* Address of first cell pointer in data[] */
u8 *data; /* The content of the whole page */
u8 *ptr; /* Used for moving information around in data[] */
u8 *endPtr; /* End of the loop */
int nSkip = (iChild ? 4 : 0);
if( *pRC ) return;
@@ -5786,13 +5783,7 @@ static void insertCell(
if( iChild ){
put4byte(&data[idx], iChild);
}
ptr = &data[end];
endPtr = &data[ins];
assert( (SQLITE_PTR_TO_INT(ptr)&1)==0 ); /* ptr is always 2-byte aligned */
while( ptr>endPtr ){
*(u16*)ptr = *(u16*)&ptr[-2];
ptr -= 2;
}
memmove(&data[ins+2], &data[ins], end-ins);
put2byte(&data[ins], idx);
put2byte(&data[pPage->hdrOffset+3], pPage->nCell);
#ifndef SQLITE_OMIT_AUTOVACUUM