Re: mingw & mprotect() from libgcc.a

[Sam S. <sd...@gn...>]

Vladimir,

Vladimir Tzankov wrote:
> 
> after this commit (on 2009-06-23):
> spvw_mmap.d (mprotect) [HAVE_WIN32_VM]: guard the definition
> 	with #ifdef HAVE_MPROTECT because mingw may already have it in
> 	/lib/gcc/i686-pc-mingw32/3.4.4/libgcc.a(_trampoline.o):(.text+0x10)
> 
> generational GC build on mingw stopped working. mprotect() always
> fails due to invalid argument.
> The problem is that mprotect() that comes with libgcc.a expects
> different values for page protection. After consulting with libgcc.a
> sources and redefining in win32.d (in case HAVE_MPROTECT is defined):
> #define PROT_NONE 0
> #define PROT_READ 1
> #define PROT_READ_WRITE 3
> it's ok.
> 
> Not sure whether we should revert back or redefine the above (the
> values are above are hardcoded in libgcc.a).

Thanks.
I applied the patch you suggest.

Sam.