Linking a dylib/DLL is broken on windows

[alexchandel]

Attempting to link a crate as a "dylib" on windows, specifically the nightly i686-pc-windows-gnu, to produce a DLL results in a linker error if that crate uses array subscripting. For example, compiling with no options,

#![crate_type = "dylib"]
pub unsafe extern "system" fn foo() -> f64 {
    let x: [f64; 4] = [0.0, 1.0, 2.0, 3.0];
    x[2]
}

results in a linker error,

error: linking with `gcc` failed: exit code: 1
note: "gcc" "-Wl,--enable-long-section-names" "-fno-use-linker-plugin" "-Wl,--nxcompat" "-Wl,--large-address-aware" "-shared-libgcc" "-L" "C:\tools\rust32\bin\rustlib\i686-pc-windows-gnu\lib" "alg.o" "-o" "alg.dll" "alg.metadata.o" "C:\tools\rust32\bin\rustlib\i686-pc-windows-gnu\lib\libstd-11582ce5.rlib" "C:\tools\rust32\bin\rustlib\i686-pc-windows-gnu\lib\libcollections-11582ce5.rlib" "C:\tools\rust32\bin\rustlib\i686-pc-windows-gnu\lib\librustc_unicode-11582ce5.rlib" "C:\tools\rust32\bin\rustlib\i686-pc-windows-gnu\lib\librand-11582ce5.rlib" "C:\tools\rust32\bin\rustlib\i686-pc-windows-gnu\lib\liballoc-11582ce5.rlib" "C:\tools\rust32\bin\rustlib\i686-pc-windows-gnu\lib\liblibc-11582ce5.rlib" "C:\tools\rust32\bin\rustlib\i686-pc-windows-gnu\lib\libcore-11582ce5.rlib" "-L" "C:\tools\rust32\bin\rustlib\i686-pc-windows-gnu\lib" "-L" "c:\Users\alex\Projects\XALG_Counter\.rust\bin\i686-pc-windows-gnu" "-L" "c:\Users\alex\Projects\XALG_Counter\bin\i686-pc-windows-gnu" "-Wl,-Bstatic" "-Wl,-Bdynamic" "-l" "ws2_32" "-l" "userenv" "-l" "advapi32" "-shared" "-l" "compiler-rt"
note: C:\tools\rust32\bin\rustlib\i686-pc-windows-gnu\lib\libcore-11582ce5.rlib(core-11582ce5.o):(.text+0x7fe4): undefined reference to `rust_begin_unwind'
C:\tools\rust32\bin\rustlib\i686-pc-windows-gnu\lib\libcore-11582ce5.rlib(core-11582ce5.o):(.eh_frame+0x9a67): undefined reference to `rust_eh_personality'
ld: C:\tools\rust32\bin\rustlib\i686-pc-windows-gnu\lib\libcore-11582ce5.rlib(core-11582ce5.o): bad reloc address 0x9a67 in section `.eh_frame'

error: aborting due to previous error

Passing the -C linker=C:/tools/rust32/bin/rustlib/i686-pc-windows-gnu/bin/gcc.exe, doesn't help, nor does compiling for x86_64, nor with the flag -C linker="C:/tools/rust/bin/rustlib/x86_64-pc-windows-gnu/bin/gcc.exe".

[alexchandel]

Closing as dupe of #18807