[Bug 47388] New: “Page fault on read access to 0x00000000 in 32-bit code” in multiple games

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=47388

            Bug ID: 47388
           Summary: “Page fault on read access to 0x00000000 in 32-bit
                    code” in multiple games
           Product: Wine
           Version: 4.0
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: wine-bugs at winehq.org
          Reporter: BabylonAS at yandex.ru
      Distribution: ---

Created attachment 64723
  --> https://bugs.winehq.org/attachment.cgi?id=64723
Wing Commander: Prophecy crash backtrace

Hello everyone.

I’ve attempted to install some Windows-only games on my ThinkPad X31 (32-bit)
running Debian 10 (while technically it is not released yet, I’ve switched to
use the “testing” repositories, which are used to prepare the tenth version’s
release) using Wine 4.0. So far I tried the first Galactic Civilizations (with
the expansion, Altarian Prophecy), Civilization III (with both expansions, Play
the World and Conquests), Sid Meier’s Alpha Centauri (with the expansion, Alien
Crossfire) and Wing Commander: Prophecy. All games (except Alpha Centauri,
which has been bought digitally on GOG.com which only provides a Windows
version) have been installed from compact discs, and might not be the latest
versions.

All of them succumbed to a “Page fault on read access to 0x00000000 in 32-bit
code” or similar error upon launching. GalCiv’s map editor (introduced with
Altarian Prophecy) also did crash, and Alpha Centauri’s GOG installer did
trigger the error as well (but it didn’t led to fatal consequences). Wherever I
took a look at the backtrace, I saw a failure of the assembler instruction
“movl 0x0(%eax),%ecx” (the registers and the 0x0 part can vary). By this point
I’ve only saved backtraces for two of the crashes, specifically of Wing
Commander: Prophecy and Alpha Centauri (with Alien Crossfire).

I’ve seen a bunch of other bug reports involving “movl 0x0(%eax),%ecx” or
similar cases, but they appear to refer to old versions of Wine and not be
updated in a long time. Only https://bugs.winehq.org/show_bug.cgi?id=40334 with
a similar “page fault on read access to 0x00000000” seems to be recent, but it
is a crash of 64-bit code and doesn’t disclose the exact failing instruction.

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