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mdbx: import - ITS#8722 fix FIRST_DUP/LAST_DUP cursor bounds check.

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Change-Id: I6dbba19b594a4bd3545d430a3438cf3b1c5a0a0b
This commit is contained in:
Leo Yuriev 2017-09-07 09:41:38 +03:00
parent 5f90052274
commit 26dab6dee0
1 changed files with 6 additions and 0 deletions
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6
src/mdbx.c
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@ -6649,6 +6649,10 @@ int mdbx_cursor_get(MDBX_cursor *mc, MDBX_val *key, MDBX_val *data,
return MDBX_EINVAL;
if (unlikely(mc->mc_xcursor == NULL))
return MDBX_INCOMPATIBLE;
if (mc->mc_ki[mc->mc_top] >= NUMKEYS(mc->mc_pg[mc->mc_top])) {
mc->mc_ki[mc->mc_top] = NUMKEYS(mc->mc_pg[mc->mc_top]);
return MDBX_NOTFOUND;
}
{
MDBX_node *leaf = NODEPTR(mc->mc_pg[mc->mc_top], mc->mc_ki[mc->mc_top]);
if (!F_ISSET(leaf->mn_flags, F_DUPDATA)) {
@ -7360,6 +7364,8 @@ int mdbx_cursor_del(MDBX_cursor *mc, unsigned flags) {
continue;
if (m2->mc_pg[mc->mc_top] == mp) {
MDBX_node *n2 = leaf;
if (m2->mc_ki[mc->mc_top] >= NUMKEYS(mp))
continue;
if (m2->mc_ki[mc->mc_top] != mc->mc_ki[mc->mc_top]) {
n2 = NODEPTR(mp, m2->mc_ki[mc->mc_top]);
if (n2->mn_flags & F_SUBDATA)