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Revert "Revert "fix rub to crash gracefully upon decoding invalid data""

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This reverts commit 8c87faf180e00c582b01f7c4e82b77b17933596a.

The previous use-after-free fix appears to alleviate the crash "caused"
by this code.
This commit is contained in:
~hatteb-mitlyd 2014-05-09 12:45:41 -07:00
parent 4c967b2d60
commit c5b2463de4
1 changed files with 9 additions and 1 deletions
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10
gen164/5/rub.c
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@ -16,6 +16,8 @@
u2_atom w, x, y, z; u2_atom w, x, y, z;
u2_atom p, q; u2_atom p, q;
u2_atom m = j2_mbc(Pt1, add)(wir_r, a, u2_met(0, b));
// Compute c and d. // Compute c and d.
{ {
x = u2_rx(wir_r, a); x = u2_rx(wir_r, a);
@ -23,6 +25,12 @@
while ( _0 == j2_mbc(Pt3, cut)(wir_r, _0, x, _1, b) ) { while ( _0 == j2_mbc(Pt3, cut)(wir_r, _0, x, _1, b) ) {
u2_atom y = j2_mbc(Pt1, inc)(wir_r, x); u2_atom y = j2_mbc(Pt1, inc)(wir_r, x);
// Sanity check: crash if decoding more bits than available
if ( u2_yes == j2_mbc(Pt1, gth)(wir_r, x, m)) {
// fprintf(stderr, "[%%rub-hard %d %d %d]\r\n", a, x, m);
return u2_bl_bail(wir_r, c3__exit);
}
u2_rz(wir_r, x); u2_rz(wir_r, x);
x = y; x = y;
} }
@ -77,6 +85,6 @@
*/ */
u2_ho_jet u2_ho_jet
j2_mbj(Pt5, rub)[] = { j2_mbj(Pt5, rub)[] = {
{ ".2", c3__hevy, j2_mb(Pt5, rub), Tier3, u2_none, u2_none }, { ".2", c3__hevy, j2_mb(Pt5, rub), Tier5, u2_none, u2_none },
{ } { }
}; };