[fixed]Headless Skaab crash exiling a creature

[Aswan jaguar]

Describe the Bug:
Headless Skaab as soon as you select a creature from your graveyard to exile to pay the additional cost it errors and crashes.

dump error | Open

Assertion failed
functions/deck.c:1489
graveyard_ptr_mutable[player][position] == iid_draw_a_card
0: 0x0247CE18
1: 0x0247CF69
2: 0x024A6A7F
3: 0x023D7568
4: 0x023D76F8
5: 0x022F57CA
6: 0x024EC735
7: 0x024D745D
8: 0x024D7FC4
9: 0x00435A13
10: 0x00433AF9
11: 0x0043BF12
12: 0x004399BD
13: 0x0047902C
14: 0x004946E9
15: 0x7C80B729

Which card did behave improperly?
Headless Skaab

Which update are you using? (date, name)Which type? (duel, gauntlet, sealed deck)
Manalink dev 778ccb5 version - duel

What exactly should be the correct behavior/interaction?
Headless Skaab

Are any other cards possibly affected by this bug?
-

[Aswan jaguar]

Headless Skaab in my crash above was the only card in my graveyard. It didn't crash few turns later when there was another creature above it and I selected that creature to exile. If you select the bottom creature it will crash again.
There is another bug instead of the creature you exile in exile goes a Swamp.

[gnomefry]

The bug of an error and game crash when paying the GY portion of the cost remains for both Headless Skaab and Skaab Goliath.

Error message:

Assertion failed
functions/deck.c:1511
graveyard_ptr_mutable[player][position] == iid_draw_a_card
0: 0x0253E188
1: 0x0253E2E9
2: 0x024F451F
3: 0x021532F5
4: 0x02153478
5: 0x021A519A
6: 0x0254E415
7: 0x0252B97D
8: 0x0252C4BE
9: 0x00435A13
10: 0x00433AF9
11: 0x0043BF12
12: 0x004399BD
13: 0x0047902C
14: 0x004946E9
15: 0x76F72369
16: 0x77B6E66B
17: 0x77B6E63F

I''ll attach a current savegame to reproduce the crash using Skaab Goliath. Version 8-2020 a62926f - gauntlet.

See also Skaab Ruinator and Relentless Skaabs.

[drool66]

Fixed in a7b1976. There were two big problems in everyone's favorite function gather_body_parts()

[Aswan jaguar]

It seems to work right if it exiles a single creature like Headless Skaab does but it fails and crashes if it exiles more than one creature like Skaab Goliath and Skaab Ruinator do.

dump error using Skaab Ruinator | Open

Assertion failed
functions/deck.c:1521
graveyard_ptr_mutable[player][position] == iid_draw_a_card
0: 0x025BF178
1: 0x025BF2D9
2: 0x0257187F
3: 0x02176A47
4: 0x02176C08
5: 0x0217B79E
6: 0x025D0295
7: 0x025AA9CC
8: 0x025AB52E
9: 0x00435A13
10: 0x00433AF9
11: 0x0043BF12
12: 0x004399BD
13: 0x0047902C
14: 0x004946E9
15: 0x7C80B729

[drool66]

Thanks again
Fixed in d395956