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Clean up E0668 explanation #73399

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Jun 20, 2020
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Clean up E0668 explanation #73399

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13 changes: 8 additions & 5 deletions src/librustc_error_codes/error_codes/E0668.md
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Original file line number Diff line number Diff line change
@@ -1,11 +1,7 @@
Malformed inline assembly rejected by LLVM.

LLVM checks the validity of the constraints and the assembly string passed to
it. This error implies that LLVM seems something wrong with the inline
assembly call.
Erroneous code example:

In particular, it can happen if you forgot the closing bracket of a register
constraint (see issue #51430):
```compile_fail,E0668
#![feature(llvm_asm)]
Expand All @@ -17,3 +13,10 @@ fn main() {
}
}
```

LLVM checks the validity of the constraints and the assembly string passed to
it. This error implies that LLVM seems something wrong with the inline
assembly call.

In particular, it can happen if you forgot the closing bracket of a register
constraint (see issue #51430), like in the previous code example.