[Bug 50257] Regression: startup crash/infinite loop on FreeBSD

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=50257

--- Comment #13 from Alex S <iwtcex at gmail.com> ---
(In reply to Damjan Jovanovic from comment #12)

> ELF's symbol handling is generally a nightmare,

Still, our nightmare implementation is supposed to be compatible with GNU's.
It's quite concerning if Linux behaves differently.

> Here, the user-defined malloc probably overrides libc's,
> resulting in a crash as it has different ABI/semantics, possibly corrupting
> memory too.

In Gen's case the code simply crashes on the first (libc's internal) memory
allocation, which is to be expected. The Wine issue is a bit more interesting:

env LD_DEBUG=1 ./wine64 winecfg
...
"calloc" in "libc.so.7" ==> 0x69626e00 in "ucrtbase.dll.so"
reloc_jmpslot: *0x62245c18 = 0x69626e00
0084:err:heap:HEAP_GetPtr Invalid heap 0000000000000000!
0084:err:heap:HEAP_GetPtr Invalid heap 0000000000000000!
"_execve" in "libc.so.7" ==> 0x6963e1d0 in "ucrtbase.dll.so"
...
"_exit" in "libc.so.7" ==> 0x69617190 in "ucrtbase.dll.so"
...

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