[Bug 51596] New: Unhandled exception code c0000005 when running any 64-bit Winelib application

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WineHQ Bugzilla

12 Aug 2021 12 Aug '21

3:03 p.m.

https://bugs.winehq.org/show_bug.cgi?id=51596

Bug ID: 51596 Summary: Unhandled exception code c0000005 when running any 64-bit Winelib application Product: Wine Version: 6.14 Hardware: x86-64 OS: Linux Status: UNCONFIRMED Severity: normal Priority: P2 Component: winelib Assignee: wine-bugs@winehq.org Reporter: mail@robbertvanderhelm.nl Distribution: ArchLinux

Somewhere after Wine 6.14, 64-bit Winelib applications are no longer able to start when Wine is compiled with optimizations. Everything still works just fine when setting {C,CXX,CROSSC}FLAGS to "-g -O0", and 32-bit Winelib applications also still work fine. I haven't tested which exact commit introduced this issue, but it at least happens after f63ecaedc72f3580e7016ba71a480025e4d86e99

To reproduce this issue, create a main.cpp file with the following contents and then compile it with `wineg++ -o main main.cpp -mwindows -m64`:

#include <iostream>

int main() { std::cout << "Hello, world!" << std::endl; }

Running main.exe with these versions of the latest master branch version of Wine Staging (wine-6.14-323-g91494ae6f2e right now) prints the following:

0144:err:seh:NtRaiseException Unhandled exception code c0000005 flags 0 addr 0x7bc2dc17

Doing the same thing with a 32-bit Winelib (i.e. with -m32) works just fine, and the 64-bit version also works fine when compiling Wine the following configuration:

CC='ccache gcc' CXX='ccache g++' CROSSCC='ccache x86_64-w64-mingw32-gcc' CFLAGS="-g -O0" CXXFLAGS="-g -O0" CROSSCFLAGS="-g -O0" ../configure --disable-tests --enable-win64

Leaving out those flags brings back the error, so there's likely some kind of UB at play here.

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WineHQ Bugzilla

13 Aug 13 Aug

8:03 p.m.

New subject: [Bug 51596] Unhandled exception code c0000005 when running any 64-bit Winelib application

https://bugs.winehq.org/show_bug.cgi?id=51596

--- Comment #1 from Robbert van der Helm mail@robbertvanderhelm.nl --- Apparently this does not affect applications compiled with winegcc. Only C++ code compiles with Wineg++ is affected by this. The C-equivalent compiles and runs just fine:

#include <stdio.h>

int main() { printf("Hello, world!\n"); }

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WineHQ Bugzilla

8:53 p.m.

New subject: [Bug 51596] Unhandled exception code c0000005 when running any 64-bit Winelib application

https://bugs.winehq.org/show_bug.cgi?id=51596

Robbert van der Helm mail@robbertvanderhelm.nl changed:

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WineHQ Bugzilla

11:09 p.m.

New subject: [Bug 51596] Unhandled exception code c0000005 when running any 64-bit Winelib application

https://bugs.winehq.org/show_bug.cgi?id=51596

Scott Garman sgarman@zenlinux.com changed:

What |Removed |Added ---------------------------------------------------------------------------- CC| |sgarman@zenlinux.com

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WineHQ Bugzilla

18 Aug 18 Aug

4:32 p.m.

New subject: [Bug 51596] Unhandled exception code c0000005 when running any 64-bit Winelib application

https://bugs.winehq.org/show_bug.cgi?id=51596

Bernhard Übelacker bernhardu@mailbox.org changed:

What |Removed |Added ---------------------------------------------------------------------------- CC| |bernhardu@mailbox.org

--- Comment #2 from Bernhard Übelacker bernhardu@mailbox.org --- Created attachment 70490 --> https://bugs.winehq.org/attachment.cgi?id=70490 Details on the debugging attempt.

I tried to debug this and think I found some details.

In function "init_builtin_dll" an array with init functions is queried and called afterwards.

Unfortunately the base address of this array is stored in register $rsi, which gets overwritten in the call to the function frame_dummy/register_tm_clones (main.exe).

I tried adding a "volatile" to the variable funcs declaration, and with that the executable did output its message without crash.

- void (**funcs)(int, char **, char **) = (void *)buffer; + void (** volatile funcs)(int, char **, char **) = (void *)buffer;

Unfortunately I can't tell if $rsi is allowed to be overwritten at that point and wineg++ has to be modified to avoid this, or if the "volatile" approach is right (and reliable).

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WineHQ Bugzilla

4:34 p.m.

New subject: [Bug 51596] Unhandled exception code c0000005 when running any 64-bit Winelib application

https://bugs.winehq.org/show_bug.cgi?id=51596

--- Comment #3 from Robbert van der Helm mail@robbertvanderhelm.nl --- @bernhardu It's the calling conventions not matching up. Openglfreak submitted a patch for it a couple of days ago: https://www.winehq.org/pipermail/wine-devel/2021-August/192651.html

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WineHQ Bugzilla

28 Aug 28 Aug

12:01 p.m.

New subject: [Bug 51596] Unhandled exception code c0000005 when running any 64-bit Winelib application

https://bugs.winehq.org/show_bug.cgi?id=51596

Gijs Vermeulen gijsvrm@gmail.com changed:

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WineHQ Bugzilla

31 Aug 31 Aug

6:20 p.m.

New subject: [Bug 51596] Unhandled exception code c0000005 when running any 64-bit Winelib application

https://bugs.winehq.org/show_bug.cgi?id=51596

--- Comment #4 from Robbert van der Helm mail@robbertvanderhelm.nl --- Is there anything I could do to help with this? I'd love to have this working again. From what I've gathered yabridge users don't enjoy downgrading Wine Staging as much as I thought. ;)

If setting the correct calling convention on the PE-side is not the correct approach, what should be done instead? Should these initialization functions be called directly in the Unix library?

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WineHQ Bugzilla

1 Sep 1 Sep

4:26 p.m.

New subject: [Bug 51596] Unhandled exception code c0000005 when running any 64-bit Winelib application

https://bugs.winehq.org/show_bug.cgi?id=51596

davidzavalla@gmail.com changed:

What |Removed |Added ---------------------------------------------------------------------------- CC| |davidzavalla@gmail.com

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WineHQ Bugzilla

4 Sep 4 Sep

2:03 p.m.

New subject: [Bug 51596] Unhandled exception code c0000005 when running any 64-bit Winelib application

https://bugs.winehq.org/show_bug.cgi?id=51596

Andrzej Kilijański and3md@gmail.com changed:

What |Removed |Added ---------------------------------------------------------------------------- CC| |and3md@gmail.com

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WineHQ Bugzilla

7 Sep 7 Sep

7:44 a.m.

New subject: [Bug 51596] Unhandled exception code c0000005 when running any 64-bit Winelib application

https://bugs.winehq.org/show_bug.cgi?id=51596

Oskenso winehq@oskenso.com changed:

What |Removed |Added ---------------------------------------------------------------------------- CC| |winehq@oskenso.com

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WineHQ Bugzilla

10 Sep 10 Sep

9:03 p.m.

New subject: [Bug 51596] Unhandled exception code c0000005 when running any 64-bit Winelib application

https://bugs.winehq.org/show_bug.cgi?id=51596

Alexandre Julliard julliard@winehq.org changed:

--- Comment #5 from Alexandre Julliard julliard@winehq.org --- Reverted in e9cfc97d46aaf39bc9c2a41b319d3b3b358c0f04. This will need more thought.

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WineHQ Bugzilla

11 Sep 11 Sep

8:03 p.m.

New subject: [Bug 51596] Unhandled exception code c0000005 when running any 64-bit Winelib application

https://bugs.winehq.org/show_bug.cgi?id=51596

David Zavalla davidzavalla@gmail.com changed:

What |Removed |Added ---------------------------------------------------------------------------- CC|davidzavalla@gmail.com |

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WineHQ Bugzilla

24 Sep 24 Sep

8:31 p.m.

New subject: [Bug 51596] Unhandled exception code c0000005 when running any 64-bit Winelib application

https://bugs.winehq.org/show_bug.cgi?id=51596

Alexandre Julliard julliard@winehq.org changed:

What |Removed |Added ---------------------------------------------------------------------------- Status|RESOLVED |CLOSED

--- Comment #6 from Alexandre Julliard julliard@winehq.org --- Closing bugs fixed in 6.18.

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