Windows: run-pass/test-runner-hides-main.rs triggers LLVM assert

[vadimcn]

Assertion failed: Section->Number != -1 && "Sections with relocations must be real!", file c:/NW/rust/src/llvm/lib/MC/WinCOFFObjectWriter.cpp, line 224

Note: this seems to be specific to LLVM integrated assembler. Compiling via external assembler, i.e. after set RUSTFLAGS=-Z no-integrated-as works fine.

[alexcrichton]

What do you mean by the LLVM integrated assembler working? There is no no-integrated-as option to the compiler, and as far as I know on Windows we always use g++ to compile LLVM-generated assembly (foo.s), so we should be always using an external assembler.

Also, was this a recent regression for you? I just ran this on my slightly-out-of-date windows VM, and the test compiled just fine for me.

[alexcrichton]

I talked with @vadimcn on IRC, and this is being opened as a placeholder issue for something that he's working on, so this can't have any external investigation right now.

[alexcrichton]

Closing as a dupe of #13793 (a little more descriptive)