[Bug 49529] New: 5.12 regression: Wine segfaults if the +heap debug channel is enabled

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49529

Bug ID: 49529
           Summary: 5.12 regression: Wine segfaults if the +heap debug
                    channel is enabled
           Product: Wine
           Version: 5.12
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 67662
  --> https://bugs.winehq.org/attachment.cgi?id=67662
Contains the 2 log files; the commands to produce them are provided in the
report

OS: Ubuntu 20.04

Found the bug in the Wine 5.12-devel package from winehq. Did not happen in
5.11-devel.

If WINEDEBUG=+heap (or warn+heap) is used, Wine crashes immediately after
trying to start any program. The segfault is the only line that is output,
apparently the program itself doesn't even get to start. After I upgraded from
5.11, the first thing I did in one of my prefixes was to start a program with
+heap debugging enabled (it crashed otherwise; though that's a separate issue).
The "updating your prefix" message didn't even get to appear.

Bisection points to this commit:

commit 8a169390c9ef4d8a43b604558c4194a052473c0c
Author: Alexandre Julliard 
Date:   Tue Jun 30 12:01:37 2020 +0200

ntdll: Build with msvcrt.

Signed-off-by: Alexandre Julliard

--------

I tried poking around the issue with a clean prefix on 5.12-devel. Attached
logs for commands:
1) WINEDEBUG=+all wine winecfg.exe
2) valgrind --trace-children=yes wine xcopy.exe
(sorry for that second one, I'm new to Wine debugging, and that was the first
time I did anything like that; not sure it's even relevant)

As of the moment of submitting this bug report, new patches committed to Git
after the release of 5.12 do not fix the issue.

[Bug 49529] 5.12 regression: Wine segfaults if the +heap debug channel is enabled

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49529

Louis Lenders  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
                 CC|                            |[e-mail],
                   |                            |[e-mail]
    Regression SHA1|                            |8a169390c9ef4d8a43b604558c4
                   |                            |194a052473c0c
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from Louis Lenders  ---
Confirming

No futher output then Segmentation fault

Added regression sha1 that reporter of bug found

[Bug 49529] 5.12 regression: Wine segfaults if the +heap debug channel is enabled

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49529

--- Comment #2 from [e-mail] ---
I can no longer reproduce the issue with 5.13-devel.

[Bug 49529] 5.12 regression: Wine segfaults if the +heap debug channel is enabled

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49529

[e-mail] changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED

--- Comment #3 from [e-mail] ---
I don't think this ever happened again after 5.13, so I'll assume this is fixed
and mark is as such. Thank you for your work, Wine developers.

[Bug 49529] 5.12 regression: Wine segfaults if the +heap debug channel is enabled

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49529

Alexandre Julliard  changed:

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

--- Comment #4 from Alexandre Julliard  ---
Closing bugs fixed in 5.20.