LuaJIT 2 crash when compiled in WIN64 + UNICODE

[Laurent Poujoulat <laurent.poujoulat@...>]

Hello All,

I was porting one application embedding LuaJIT 2 from WIN32 to WIN64. 
The application is compiled in Unicode mode. The application crashed in 
the JIT initialization. The reason comes from the way the pointer to the 
allocation function is taken in lj_alloc.c. It use the GetModuleHandle() 
function. This function has two flavors: one with wide chars and one 
with chars. In LuaJIT, the parameter is always a char string, so when 
passed on the wide char version of GetModuleHandle() it don't understand 
the ntdll.dll name, returns a NULL pointer and crashes.

The fix is easy: just use GetModuleHandleA() instead of 
GetModuleHandle() so that it always use the ANSI flavour whatever we are 
in WIN64 or WIN32.

Hope this may be helpful to someone.

Regards,

--
Laurent POUJOULAT
Ingénieur Système / System Engineer

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