In this Rust Issue page, the author indicates there is a crash in llvm that need to be fixed, and I have provided my findings in the follow-up comment. I am asking here for your opinions. What should be the Rust Compiler's behavior for this issue? Usually, common linkage only allows global variables that are not constants and are zero-initialized. Should we make the RustC frontend detect the invalid declaration beforehand, or should we make this test case pass by removing the common attribute in IR (such as the example C program I posted in that issue page)? Thank you!
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