miniparrot SEGV on Windows 7 with MSVC

[jnthn]

Trying to build the tagged RELEASE_7_0_1 gives:

.\miniparrot.exe -Iruntime\parrot\include config_lib.pir > runtime\parrot\include\config.fpmc
NMAKE : fatal error U1077: '.\miniparrot.exe' : return code '0xc0000005'

Did the usual make realclean, git clean -fdx, and so forth. Nothing unusual otherwise, except perhaps that I configured with --debugging to get debug symbols.

[rurban]

64bit only.
Justed tested ok with gcc on cygwin64 and mingw64. I'll have to install msvc now.
Cannot get msvc yet working on win64

vcvarsall x86_amd64
perl Configure.pl --cc=cl --ld=link --link=link --cxx=cl

to override most of the wrong strawberry perl mingw64 settings.

[rurban]

Got msvc 17 now working...

[rurban]

The exception happens in Parrot_NativePCCMethod_invoke
at the nci method call of Parrot_IMCCompiler_nci_compile_file

With mingw gdb I get the segv at

Starting program: /usr/src/parrot/win64/miniparrot.exe -Iruntime/parrot/include config_lib.pir
[New Thread 3548.0xd2c]

Program received signal SIGSEGV, Segmentation fault.
0x000000009c44b930 in ?? ()
(gdb) bt
#0  0x000000009c44b930 in ?? ()
#1  0x000007fe9c45536b in libparrot!Parrot_Pointer_ro_update_vtable ()
   from /usr/src/parrot/win64/libparrot.dll
#2  0x0000000000000001 in ?? ()
#3  0x000007fe9c346671 in libparrot!Parrot_Pointer_ro_update_vtable ()
   from /usr/src/parrot/win64/libparrot.dll
#4  0x000000c771b2b2b0 in ?? ()
#5  0x000000c771a14d20 in ?? ()
#6  0x0000000000000000 in ?? ()

[rurban]

It failed in 6.11.0 already, kinda bisecting now.

I needed to patch env for the removed access to the _environ global.

[rurban]

891dd90 broke win64 msvc on all nci calls, i.e. 6.11.0.

-#define D2FPTR(x) UINTVAL2PTR(funcptr_t, PTR2UINTVAL(x))
-#define F2DPTR(x) UINTVAL2PTR(void *, PTR2UINTVAL((funcptr_t) (x)))
+#define D2FPTR(x) UINTVAL2PTR(funcptr_t, PTR2ULONG(x))
+#define F2DPTR(x) UINTVAL2PTR(void *, PTR2ULONG((funcptr_t) (x)))

of course, on win64 msvc long is only 4 bytes!!

[rurban]

Pushed to master. Not sure yet if we should do a 7.0.2 hotfix for this.

On my win64 msvc system environ access is also broken, which would require smoke-me/env-gh1191
@jnthn: Can you please confirm --gen-parrot=master works for you on win64/msvc?