Commits on Jun 22, 2020

1. Point at the call spawn when overflow occurs during monomorphization …

   This improves the output for issue rust-lang#72577, but there's still more work
   to be done.
   
   Currently, an overflow error during monomorphization results in an error
   that points at the function we were unable to monomorphize. However, we
   don't point at the call that caused the monomorphization to happen. In
   the overflow occurs in a large recursive function, it may be difficult
   to determine where the issue is.
   
   This commit tracks and `Span` information during collection of
   `MonoItem`s, which is used when emitting an overflow error. `MonoItem`
   itself is unchanged, so this only affects
   `src/librustc_mir/monomorphize/collector.rs`

   

   Aaron1011 committed Jun 22, 2020
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