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AyeZeeBB
9b79fd7829
Guard a crash when the game describes a failed load
When a load fails, the game writes "load <address> failed with error:"
and describes each part of the load's error in turn. That list can
hold parts that were never set, and the game calls through them: six
crash reports from one player on 2.0.5 and 2.0.6 all end at
Skate.exe+0x2e3ab9c, after eight parts that read "no error".
The guard hooks that one function. Before the game describes the
list, every part that is not one of the game's own objects is emptied,
so it reads "no error" as an empty part does; the description also
runs under an exception handler. The failed load is then the game's to
deal with, as it meant to.
What the game wrote goes to the log as a warning ("The game described
the error of a load that failed"), with how many parts were emptied,
so content that does not load can be traced. The game's message names
no asset, only an address.
22 lines
1.3 KiB
C++
22 lines
1.3 KiB
C++
#pragma once
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#include "Engine/Game/Build/fingerprint.h"
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#include <cstdint>
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// The game's errors of a load made of several (Extension/World/load_error_guard.cpp).
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namespace dingosdk::game::build::v20260929::load_errors {
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// describe(errors, text): a virtual of the error that holds one error per part of a load. It
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// writes "[i]:" and each part's own description (its virtual at + 8), or "no error" for a null
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// one, a line each. The parts are an array of pointers (errors + 0x18) and their count
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// (errors + 0x20); the text is the game's fixed text writer, whose first field is its buffer
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// with flags in the two low bits.
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//
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// The game calls it when a load fails, to write "load <address> failed with error: ..."
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// (0x1aa75e0), and the array can hold parts that were never set: crash reports of 2026-10-11
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// (one player, six times, 2.0.5 and 2.0.6) all end in the call through part 8 after eight that
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// read "no error" - once a null vtable, else garbage that was read or run.
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inline constexpr Fingerprint describe{0x2e3ab40, {
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0x48,0x89,0x5c,0x24,0x08,0x48,0x89,0x74,0x24,0x10,0x57,0x48,0x83,0xec,0x20,0x33,
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0xff,0x48,0x8b,0xda,0x48,0x8b,0xf1,0x48,0x39,0x79,0x20,0x76,0x6b,0x0f,0x1f,0x00}};
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inline constexpr std::uintptr_t parts_offset = 0x18, count_offset = 0x20;
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}
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