Bug#1010269: crashes immediately at start
I reproduce this segfault on an up-to-date Debian Sid.
Here is a backtrace generated using gdb:
$ LANG=C gdb --args /usr/lib/wine-development/wine64 winecfg
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Reading symbols from /usr/lib/wine-development/wine64...
Reading symbols from /usr/lib/debug/.build-id/a4/7778b458aa03f4a99cf9e5e0f74947c0c7af39.debug...
(gdb) run
Starting program: /usr/lib/wine-development/wine64 winecfg
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
process 1507290 is executing new program: /usr/lib/wine-development/wine64
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
err:environ:read_nls_file failed to load 11/20127
err:environ:read_nls_file failed to load 10/0
[Detaching after fork from child process 1507294]
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7d16b6a in ntdll_towupper (ch=<optimized out>) at dlls/ntdll/unix/unix_private.h:415
415 dlls/ntdll/unix/unix_private.h: No such file or directory.
(gdb) bt
#0 0x00007ffff7d16b6a in ntdll_towupper (ch=<optimized out>) at dlls/ntdll/unix/unix_private.h:415
#1 ntdll_wcsnicmp (str1=str1@entry=0x7d00f2e0, str2=str2@entry=0x7ffff7d71e70 <pathW.44>, n=n@entry=4)
at dlls/ntdll/unix/env.c:783
#2 0x00007ffff7d16bfd in find_env_var (env=env@entry=0x7d00f2e0, size=<optimized out>,
name=name@entry=0x7ffff7d71e70 <pathW.44>, namelen=namelen@entry=4) at dlls/ntdll/unix/env.c:1233
#3 0x00007ffff7d16c6e in get_env_var (env=env@entry=0x7d00f2e0, size=<optimized out>,
name=name@entry=0x7ffff7d71e70 <pathW.44>, namelen=namelen@entry=4) at dlls/ntdll/unix/env.c:1241
#4 0x00007ffff7d1a109 in build_initial_params (module=0x7fffffffdab8) at dlls/ntdll/unix/env.c:2188
#5 init_startup_info () at dlls/ntdll/unix/env.c:2282
#6 0x00007ffff7d2f4ac in start_main_thread () at dlls/ntdll/unix/loader.c:2188
#7 __wine_main (argc=<optimized out>, argv=<optimized out>, envp=<optimized out>) at dlls/ntdll/unix/loader.c:2530
#8 0x000000007d001255 in main (argc=2, argv=0x7fffffffe2b8) at loader/main.c:183
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