Created
November 5, 2015 21:51
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#define unlink_large_chunk(M, X) {\ | |
tchunkptr XP = X->parent;\ | |
tchunkptr R;\ | |
if (X->bk != X) {\ | |
tchunkptr F = X->fd;\ | |
R = X->bk;\ | |
if (RTCHECK(ok_address(M, F))) {\ | |
F->bk = R;\ | |
R->fd = F;\ | |
}\ | |
else {\ | |
CORRUPTION_ERROR_ACTION(M);\ | |
}\ | |
}\ | |
else {\ | |
tchunkptr* RP;\ | |
if (((R = *(RP = &(X->child[1]))) != 0) ||\ | |
((R = *(RP = &(X->child[0]))) != 0)) {\ | |
tchunkptr* CP;\ | |
while ((*(CP = &(R->child[1])) != 0) ||\ | |
(*(CP = &(R->child[0])) != 0)) {\ | |
R = *(RP = CP);\ | |
}\ | |
if (RTCHECK(ok_address(M, RP)))\ | |
*RP = 0;\ | |
else {\ | |
CORRUPTION_ERROR_ACTION(M);\ | |
}\ | |
}\ | |
}\ | |
if (XP != 0) {\ | |
tbinptr* H = treebin_at(M, X->index);\ | |
if (X == *H) {\ | |
if ((*H = R) == 0) \ | |
clear_treemap(M, X->index);\ | |
}\ | |
else if (RTCHECK(ok_address(M, XP))) {\ | |
if (XP->child[0] == X) \ | |
XP->child[0] = R;\ | |
else \ | |
XP->child[1] = R;\ | |
}\ | |
else\ | |
CORRUPTION_ERROR_ACTION(M);\ | |
if (R != 0) {\ | |
if (RTCHECK(ok_address(M, R))) {\ | |
tchunkptr C0, C1;\ | |
R->parent = XP;\ | |
if ((C0 = X->child[0]) != 0) {\ | |
if (RTCHECK(ok_address(M, C0))) {\ | |
R->child[0] = C0;\ | |
C0->parent = R;\ | |
}\ | |
else\ | |
CORRUPTION_ERROR_ACTION(M);\ | |
}\ | |
if ((C1 = X->child[1]) != 0) {\ | |
if (RTCHECK(ok_address(M, C1))) {\ | |
R->child[1] = C1;\ | |
C1->parent = R;\ | |
}\ | |
else\ | |
CORRUPTION_ERROR_ACTION(M);\ | |
}\ | |
}\ | |
else\ | |
CORRUPTION_ERROR_ACTION(M);\ | |
}\ | |
}\ | |
} |
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